WorldWideScience.org Topics

Many of the entries listed in our index of topical pages are scientific acronyms or terms, for example gene sequences or chemical formulas.
Note that the topical pages presented here are a subset of the pages available by performing a search of WorldWideScience.org.
0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

         s centers (S心)
         s channel (S道)
         s codes (S编码)
         s matrix (S矩阵)
         s process (慢过程)
         s quarks (S夸克)
         s states (S态)
         s waves (S波)
         saas (东德国家原子安全与辐射防护局)
         sabotage (破坏活动)
         saccharides (糖类)
         saccharification (糖化)
         saccharin (糖精)
         saccharomyces (酵母菌属)
         saccharomyces cerevisiae (酿酒酵母)
         saccharose (蔗糖)
         saclay cea
         saddle-point method (鞍点法)
         safeguards (核保障)
         safety (安全)
         safety analysis (安全分析)
         safety culture (安全文化)
         safety engineering (安全工程)
         safety injection (安全注射)
         safety margins (安全裕度)


         safety nuclear
         safety reactor
         safety reports (安全报告)
         safety standards (安全标准)
         safety valves (安全阀)
         saha equation (萨哈方程)
         sails (帆船)
         saint john river (圣约翰河)
         saint lucia (圣卢西亚)
         salamanders (蝾螈科)
         salary (薪水)
         sales (销售)
         salicylic acid (水杨酸)
         salinity (盐浓度)
         salinity gradients (盐度梯度)
         saliva (唾液)
         salivary glands (唾液腺)
         salmon (鲑鱼)
         salmon event (萨蒙试验)
         salmonella (沙门氏菌属)
         salmonella typhimurium (鼠伤寒沙门氏菌)
         salt caverns (盐洞)
         salt deposits (盐矿床)
         salting-out agents (盐析剂)
         salton sea (索尔顿海)


         salts (盐)
         samarium (钐)
         samarium 153 (钐-153)
         samarium alloys (钐合金)
         samarium complexes (钐配合物)
         samarium effect (钐效应)
         samarium ions (钐离子)
         sami people (萨米人)
         sample holders (样品架)
         sample preparation (样品制备)
         samplers (取样器)
         sampling (取样)
         san bernardino mountains (圣贝纳迪诺山)
         san francisco bay (圣弗朗西斯科湾)
         san marino (圣马力诺)
         sanctions (批准)
         sand (砂)
         sand consolidation (固砂)
         sand pressure (砂层压力)
         sandia national laboratories (圣地亚国家实验室)
         sandstones (砂岩)
         sanitary landfills (卫生填埋)
         santa barbara channel (圣巴巴拉海峡)
         saponification (皂化)
         saponins (皂角苷)


         sapphire (蓝宝石)
         sapropelic coal (腐泥煤)
         sarcodina (肉足纲)
         sarcomas (肉瘤)
         sarcoplasmic reticulum (肌质网)
         sarcosine (肌氨酸)
         sargasso sea (马尾藻海)
         sarson (野油菜)
         saskatchewan (萨斯喀彻温省)
         satellite power system (卫星动力系统)
         satellites (人造卫星)
         saturation (饱和)
         saturne (土星加速器)
         saudi arabia (沙特阿拉伯)
         savannah river (萨凡纳河)
         savannas (热带稀树大草原)
         savonius rotors (萨弗尼斯转子)
         sawtooth oscillations (锯齿振荡)
         scalar fields (标量场)
         scalar mesons (标量介子)
         scalars (标量)
         scale control (结垢控制)
         scale dimension (标度量纲)
         scale height (标高)
         scale invariance (标度不变性)


         scale models (标度模型)
         scalers (定标器)
         scaling (结垢)
         scaling laws (标定律)
         scandinavia (斯堪的纳维亚)
         scandium (钪)
         scanners beam
         scanning acoustic microscopy (扫描声显微术)
         scanning electron
         scanning electron microscopy (扫描电子显微术)
         scanning light microscopy (扫描光学显微术)
         scanning tunneling microscopy (扫描隧道显微术)
         scattering (散射)
         scattering amplitudes (散射振幅)
         scattering lengths (散射长度)
         scatterplots (散点图)
         scavenging (清除)
         scavenging atmospheric
         scenedesmus (栅藻属)
         schedules (进度表)
         schiff bases (席夫碱)
         schistosoma (血吸虫)
         schistosomiasis (血吸虫病)
         schists (片岩)
         schlieren method (条纹摄影法)



         scotland (苏格兰)
         scram (紧急停堆)
         scrap (残渣)
         scrap metals (废金属)
         scrapers (刮刀)
         screen printing (丝网印刷术)
         screening (筛选)
         screening nuclear
         screens (筛子)
         screw dislocations (螺型位错)
         screw instability (螺旋不稳定性)
         screwing (螺钉紧固)
         screws (螺钉)
         scrubbers (洗涤器)
         scrubbing (洗涤)
         sea bed (海底)
         sea disposal (投海处置)
         sea level (海平面)
         sea of marmara (马尔马拉海)
         sea urchins (海胆)
         sea-floor spreading (海底扩张)
         seaborgium (106号元素)
         seacoast (海岸)
         seafood (海味)
         sealed sources (密封源)


         sealing materials (密封材料)
         seals (密封)
         seam welding (缝焊)
         seas (海洋)
         seasonal thermal energy storage (季节性热能储存)
         seasonal variations (季节变化)
         seasonings (调味品)
         seasons (季节)
         seawater (海水)
         seaweeds (海藻)
         sebaceous glands (皮脂腺)
         sebacic acid (癸二酸)
         secale (黑麦属)
         second quantization (二次量子化)
         second sound (第二声)
         second-harmonic generation (二次谐波产生)
         secondary batteries (二次电池组)
         secondary beams (次级束)
         secondary emission (次级发射)
         secondary reactions (次级反应)
         secondary recovery (二次开采)
         secrecy protection (保密)
         secretin (肠促胰液素)
         secretion (分泌物)
         sector cyclotron (扇形回旋加速器)


         sectoral analysis (切割分析)
         secular equation (久期方程)
         security (保安措施)
         security control (安全控制)
         security financial
         security personnel (保安人员)
         security violations (安全违反)
         sedatives (镇静药)
         sediment basins (沉淀池)
         sediment-water interfaces (沉积物-水界面)
         sedimentary basins (沉积盆地)
         sediments (沉积物)
         seebeck effect (塞贝克效应)
         seedlings (幼苗)
         seeds (种子)
         seeps (渗出)
         segregation (偏析)
         seismic arrays (地震台阵)
         seismic detection (地震探测)
         seismic effects (地震效应)
         seismic events (地震事件)
         seismic isolation (地震隔离)
         seismic noise (地震噪声)
         seismic surface waves (地震面波)
         seismic surveys (地震测量)


         seismic waves (地震波)
         seismicity (地震活动性)
         seismographs (地震仪)
         seismology (地震学)
         selection rules (选择定则)
         selective catalytic reduction (选择性催化还原)
         selenates (硒酸盐)
         selenides (硒化物)
         selenites (亚硒酸盐)
         selenium (硒)
         selenium 65 (硒-65)
         selenium 75 (硒-75)
         selenium complexes (硒配合物)
         selenium compounds (硒化合物)
         selenium hydrides (氢化硒)
         self-absorption (自吸收)
         self-consistent field (自洽场)
         self-diffusion (自扩散)
         self-energy (自具能)
         self-irradiation (自辐照)
         self-shielding (自屏蔽)
         semicarbazides (氨基脲)
         semiclassical approximation (半经典近似)
         semicoke (半焦炭)
         semiconductor detectors (半导体探测器)



         serum blood
         serum immune
         sesamum indicum (芝麻)
         settlements disputes
         shelters (掩体)
         sick leave (病假)
         sickle cell anemia (镰状细胞性贫血)
         sid (电离层突然扰动)
         side effects (副作用)
         siderite (菱铁矿)
         sierra leone (塞拉利昂)
         sievert (希沃特)
         sigma model (Σ模型)
         sigma terms (Σ项)
         signal conditioning (信号调节)
         signal distortion (信号失真)
         signal-to-noise ratio (信噪比)
         signals (信号)
         silanes (硅烷)
         silastic (硅橡胶)
         silica (硅石)
         silica gel (硅胶)
         silicate minerals (硅酸盐矿物)
         silicates (硅酸盐)
         siliceous rock (硅质岩)


         silicic acid (硅酸)
         silicides (硅化物)
         silicon (硅)
         silicon 28 (硅-28)
         silicon 30 (硅-30)
         silicon 32 (硅-32)
         silicon 33 (硅-33)
         silicon 39 (硅-39)
         silicon additions (硅添加物)
         silicon alloys (硅合金)
         silicon borides (硼化硅)
         silicon carbides (碳化硅)
         silicon chlorides (氯化硅)
         silicon complexes (硅配合物)
         silicon compounds (硅化合物)
         silicon diodes (硅二极管)
         silicon hydrides (氢化硅)
         silicon ions (硅离子)
         silicon isotopes (硅同位素)
         silicon nitrides (氮化硅)
         silicon oxides (氧化硅)
         silicon phosphates (磷酸硅)
         silicon semiconductor detectors (硅半导体探测器)
         silicon solar cells (硅太阳电池)
         silicones (聚硅氧烷)


         siliconizing (渗硅)
         silicosis (硅肺)
         silkworm (蚕)
         siloxanes (硅氧烷)
         silt (粉砂)
         siltstones (粉砂岩)
         silurian period (志留纪)
         silver (银)
         silver 100 (银-100)
         silver 102 (银-102)
         silver 103 (银-103)
         silver 104 (银-104)
         silver 107 (银-107)
         silver 108 (银-108)
         silver 109 (银-109)
         silver 119 (银-119)
         silver 93 (银-93)
         silver 96 (银-96)
         silver 98 (银-98)
         silver 99 (银-99)
         silver alloys (银合金)
         silver complexes (银配合物)
         silver compounds (银化合物)
         silver ions (银离子)
         silver ores (银矿石)



         sister chromatid exchanges (姐妹染色单体互换)
         site characterization (厂址特征)
         site preparation (厂址预选)
         site rehabilitation (厂址复原过程)
         site selection (厂址选择)
         site surveys (厂址调查)
         sitosterol (谷甾醇)
         size (大小)
         sizing (量尺寸)
         skating rinks (溜冰场)
         skeletal diseases (骨骼疾病)
         skeletal fossils (骨骼化石)
         skeleton (骨骼)
         skewness (偏度)
         skimmers (去浮器)
         skin (皮肤)
         skin absorption (皮肤吸收)
         skin cancer (皮肤癌)
         skin damage (表皮损坏)
         skin diseases (皮肤病)
         skin effect (趋肤效应)
         skin effect well
         skull (颅骨)
         sky (天空)
         skylab (空间实验室)


         skylights (天窗)
         skyrme potential (斯库姆势)
         skyrmions (斯库姆离子)
         skyscrapers (摩天大楼)
         sl groups (SL群)
         slabs (厚板)
         slac (斯坦福直线加速器中心)
         slags (熔渣)
         slater determinant (斯莱特行列式)
         slater method (斯莱特法)
         slc (斯坦福直线对撞机)
         sld (斯坦福直线对撞机探测器)
         sleep (睡眠)
         slice mining (分层开采)
         sliding friction (滑动摩擦)
         slightly enriched uranium (低浓缩铀)
         slip (滑移)
         slip casting (注浆成型)
         slip flow (滑流)
         slip ratio (滑移比)
         slip velocity (滑移速度)
         slm (扫描光学显微术)
         slope stability (斜坡稳定性)
         slovak republic (斯洛伐克共和国)
         slovakia (斯洛伐克)


         slovenia (斯洛文尼亚)
         slow neutrons (慢中子)
         slowdown (慢化)
         slowing-down (慢化)
         slowing-down length (慢化长度)
         sludges (泥浆)
         sludges sewage
         slurries (淤浆)
         slurry pipelines (浆液管线)
         slurry reactors (悬浮液堆)
         slush (烂泥)
         small angle scattering (小角度散射)
         small businesses (小型企业)
         small intestine (小肠)
         smectite (绿土)
         smelters (熔炉)
         smelting (熔炼)
         smes (超导磁能储存)
         smog (烟雾)
         smoke detectors (烟雾探测器)
         smokes (烟尘)
         smooth manifolds (光滑流形)
         smoothness (光滑度)
         sn method (sn法)
         snails (螺类)


         snake river plain (斯内克河平原)
         snakes (蛇)
         sng (合成天然气)
         snow (雪)
         so groups (SO群)
         so-10 groups (SO(10)群)
         so-12 groups (SO(12)群)
         so-2 groups (SO(2)群)
         so-3 groups (SO(3)群)
         so-4 groups (SO(4)群)
         so-5 groups (SO-5群)
         so-6 groups (SO(6)群)
         so-8 groups (SO(8)群)
         soaps (肥皂)
         social impact (社会影响)
         social services (社会服务)
         socio-economic aspects (社会-经济状况)
         socio-economic factors (社会-经济因素)
         sociology (社会学)
         sod (超氧化物歧化酶类)
         sod soil
         soda ash (苏打灰)
         sodium (钠)
         sodium 18 (钠-18)
         sodium 19 (钠-19)


         sodium 20 (钠-20)
         sodium 21 (钠-21)
         sodium 22 (钠-22)
         sodium 25 (钠-25)
         sodium 26 (钠-26)
         sodium 29 (钠-29)
         sodium 30 (钠-30)
         sodium 33 (钠-33)
         sodium 35 (钠-35)
         sodium 37 (钠-37)
         sodium carbonates (碳酸钠)
         sodium chlorides (氯化钠)
         sodium compounds (钠化合物)
         sodium hydroxides (氢氧化钠)
         sodium ions (钠离子)
         sodium oxides (氧化钠)
         sodium phosphates (磷酸钠)
         sodium silicates (硅酸钠)
         sodium sulfates (硫酸钠)
         sodium tungsten bronze (钠钨青铜)
         sofc (固态氧化物燃料电池)
         soft coal (软煤)
         soft component (软成份)
         soil chemistry (土壤化学)
         soil conservation (水土保持)





         solenoids (螺线管)
         solid electrolytes (固体电解质)
         solid fuels (固体燃料)
         solid lubricants (固体润滑剂)
         solid oxide fuel cells (固态氧化物燃料电池)
         solid solutions (固溶体)
         solid state lasers (固体激光器)
         solid state physics (固体物理学)
         solid wastes (固体废物)
         solidification (固化)
         solids (固体)
         solids flow (固体颗粒流动)
         solitons (孤立子)
         sols (溶胶)
         solubility (溶解度)
         solutes (溶质)
         solution heat (溶解热)
         solution mining (溶浸法开采)
         solutions (溶液)
         solvated electrons (溶剂化电子)
         solvation (溶剂化)
         solvent extraction (溶剂萃取)
         solvent properties (溶剂性质)
         solvents (溶剂)
         solvolysis (溶剂分解)


         somalia (索马里)
         somatic cells (体细胞)
         somatic mutations (体细胞突变)
         somatostatin (生长刺激抑制素)
         sommerfeld integrals (索姆费尔德积分)
         sonar (声纳)
         sondes (探测器)
         sonic logging (声波测井)
         sonic probes (声探针)
         soot (煤烟)
         sorbic acid (山梨酸)
         sorbitol (山梨糖醇)
         sorbose (山梨糖)
         sorghum (高粱)
         sorption (吸着)
         sorptive properties (吸着性能)
         sorting (分选)
         sound (声)
         sound navigation and ranging (声导航和测距)
         sound waves (声波)
         soundproofing (隔声)
         sour crude oil (酸性原油)
         sour crudes (含硫原油)
         source rocks (生油岩层)
         source terms (放射性源项)


         south africa (南非)
         south america (南美洲)
         south australia (南澳大利亚)
         south carolina (南卡罗来纳州)
         south china sea (南中国海)
         south dakota (南达科他州)
         south korea (南朝鲜)
         south west africa (西南非)
         southeast region (东南地区)
         southern hemisphere (南半球)
         southern oscillation (南方大气振荡)
         southwest africa (西南非)
         southwest region (西南地区)
         soviet union (苏联)
         soy oil (豆油)
         soybean oil (豆油)
         soybean plant (大豆植物)
         soybeans (大豆)
         sp groups (SP群)
         sp logging (自然电位测井)
         space (空间)
         space charge (空间电荷)
         space cooling (空间致冷)
         space dependence (空间相关性)
         space flight (空间飞行)


         space groups (空间群)
         space heaters (空间加热器)
         space heating (空间加热)
         space reflection (空间反射)
         space shuttles (航天飞机)
         space transport (空间运输)
         space vehicles (航天器)
         space weapons (空间武器)
         space-charge layer (空间电荷层)
         space-time (时空)
         space-time model (时空模型)
         spacers (定位格架)
         spacetime (时空)
         spadns (磺苯基-萘-磺酸)
         spain (西班牙)
         spallation (散裂)
         spallation products (散裂产物)
         spargers (分布器)
         spark gaps (火花隙)
         spark ignition engines (火花点火发动机)
         spark machining (电火花机加工)
         spatial dependence (空间相关性)
         spatial distribution (空间分布)
         spatial resolution (空间分辨率)
         spe (太阳质子)




         spermidine (亚精胺)
         spermine (精胺)
         sphalerite (闪锌矿)
         sphene (榍石)
         spher (壳牌弹丸热交换器蒸馏)
         spheres (球)
         spherical aberrations (球面像差)
         spherical configuration (球形位形)
         spherical harmonics (球谐函数)
         spherical harmonics method (球谐函数法)
         spherical model (球模型)
         spheroids (球体)
         sphingomyelins (鞘磷脂)
         spices (香料)
         spicules (针状物)
         spiders (蜘蛛)
         spillways (泄水道)
         spin (自旋)
         spin echo (自旋回波)
         spin exchange (自旋交换)
         spin flip (自旋翻转)
         spin glass state (自旋玻璃态)
         spin orientation (自旋取向)
         spin waves (自旋波)
         spin-lattice relaxation (自旋-点阵弛豫)


         spin-off (让产易股)
         spin-on coating (旋转涂覆)
         spin-orbit interaction (自旋-轨道相互作用)
         spin-spin interaction (自旋-自旋相互作用)
         spin-spin relaxation (自旋-自旋弛豫)
         spinach (菠菜)
         spinal cord (脊髓)
         spine (脊柱)
         spinels (尖晶石)
         spinor fields (旋量场)
         spinors (旋量)
         spiperone (螺环哌啶酮)
         spiral configuration (螺线位形)
         spirochaetes (螺旋体属)
         splat cooling (急冷)
         spleen (脾)
         spleen cells (脾细胞)
         spleen colony formation (脾集落形成)
         splenectomy (脾切除术)
         splenomegaly (脾肿大)
         splicing (拼接)
         spline functions (样条函数)
         split dose irradiation (分剂量照射)
         spondylitis (脊椎炎)
         spontaneous combustion (自燃)


         spontaneous fission (自发裂变)
         spontaneous mutations (自发突变)
         spontaneous potential logging (自然电位测井)
         sporadic e (散见E层)
         spores (孢子)
         sporozoa (孢子虫纲)
         sport facilities (体育设施)
         spot market (现货市场)
         spot welding (点焊)
         spot welds (点焊点)
         spray coating (喷涂)
         spray cooling (喷淋冷却)
         spray drying (喷淋干燥)
         sprayed coatings (喷雾涂层)
         sprays (喷雾器)
         spread f (扩展F层)
         springs (弹簧)
         springs water
         sprout inhibition (发芽抑制)
         sprouting (嫩枝)
         spruces (云杉)
         sputtering (溅射)
         squalane (角鲨烷)
         squalene (角鲨烯)
         square configuration (正方位形)




         star evolution (恒星演化)
         star models (恒星模型)
         starch (淀粉)
         starch gum (淀粉胶)
         stark effect (斯塔克效应)
         starquakes (星震)
         stars (恒星)
         starspots (恒星斑点)
         start-up (启动)
         start-up reactor
         starvation (饥饿)
         state buildings (国家建筑物)
         state diagrams (状态图)
         state enterprises (国家企业)
         state government (州政府)
         state liability (国家责任)
         state officials (国家官员)
         states energy
         static loads (静载荷)
         statistical data (统计数据)
         statistical mechanics (统计力学)
         statistical models (统计模型)
         statistics (统计学)
         stators (定子)
         steady flow (稳流)



         steel-cr12mov (钢-CR12MOV)
         steel-cr18ni10ti (钢-CR18NI10TI)
         steel-cr18ni9 (钢-CR18NI9)
         steel-cr5mo (钢-CR5MO)
         steel-crmo (钢-CRMO)
         steel-crmov (钢-CRMOV)
         steel-nicr (钢-NICR)
         steels (钢)
         stellar activity (恒星活动)
         stellar atmospheres (恒星大气)
         stellar radiation (恒星辐射)
         stellar spots (恒星斑点)
         stellar winds (恒星风)
         stellite (斯特莱特合金)
         stellite 6 (斯特莱特6合金)
         stem cells (干细胞)
         stem plant
         stepper motors (步进电动机)
         stereochemistry (立体化学)
         sterile male technique (雄性不育技术)
         sterility (不育)
         sterilization (灭菌)
         sterling event (英磅试验)
         stern-gerlach experiment (斯特恩-革拉赫实验)
         steroid hormones (甾类激素)


         steroids (甾族化合物)
         sterols (甾醇)
         stes (季节性热能储存)
         sth (生长激素)
         stiffness (刚性)
         stilbene (芪)
         stilbestrol (己烯雌酚)
         still gas (釜馏气)
         stillage (釜馏物)
         stimulated emission (受激发射)
         stimulation (刺激)
         stimuli (刺激物)
         stir reactor (斯特堆)
         stirling cycle (斯特林循环)
         stirling engines (斯特林发动机)
         stirring (搅拌)
         stishovite (斯石英)
         stm (扫描隧道显微术)
         stochastic cooling (随机冷却)
         stochastic momentum cooling (随机动量冷却)
         stochastic processes (随机过程)
         stockbarger method (施托克布格尔法)
         stockpiles (储备)
         stocks (库存)
         stoichiometry (化学计量)


         stokers (加煤机)
         stokes law (斯托克斯定律)
         stokes parameters (斯托克斯参数)
         stomach (胃)
         stomata (小孔)
         stoody (铬钨钴焊条合金)
         stopping power (阻止本领)
         stor-m tokamak (STOR-M托卡马克)
         storage (贮存)
         storage batteries (蓄电池组)
         storage devices data
         storage facilities (贮存设施)
         storage life (储存期)
         storage rings (储存环)
         stored energy (储能)
         stores (商店)
         storms (风暴)
         stover (饲料废物)
         stoves (火炉)
         stowage (堆装物)
         stowing (充填法)
         straggling (离散)
         strain aging (应变时效)
         strain gages (应变计)
         strain hardening (应变硬化)


         strain rate (应变率)
         strain softening (应变软化)
         strains (应变)
         strand breaks (链断裂)
         strange baryons (奇异重子)
         strange mesons (奇异介子)
         strange particles (奇异粒子)
         strangeness (奇异性)
         strata control (地层控制)
         strata movement (岩层移动)
         strategic defense initiative (主动战略防御)
         strategic petroleum reserve (战略石油储量)
         strategic points (关键点)
         stratification (成层)
         stratified charge engines (分层进料发动机)
         stratigraphy (地层学)
         stratosphere (平流层)
         straw (茎杆)
         strawberries (草莓)
         stray radiation (杂散辐射)
         streak cameras (超高速扫描摄影机)
         streams (溪流)
         streets (街道)
         strength compression
         strength flexural


         strength fracture
         strength functions (强度函数)
         strength impact
         strength shear
         strength tensile
         strength ultimate
         strength yield
         streptococcus (链球菌属)
         streptokinase (链激酶类)
         streptomyces (链霉菌属)
         streptomycin (链霉素)
         streptozocin (链脲霉素)
         streptozotocin (链脲菌素)
         stress analysis (应力分析)
         stress biological
         stress concentration factors (应力集中因子)
         stress corrosion (应力腐蚀)
         stress intensity factors (应力强度因子)
         stress relaxation (应力松弛)
         stress relieving (应力消除)
         stresses (应力)
         stretch model (伸长模型)
         striations (辉纹)
         string models (弦模型)
         string theory (弦理论)


         strip mining (露天矿槽开采)
         striped bass (条纹石)
         stripper foils (剥离箔)
         strippers (剥离器)
         stripping (削裂)
         strong interactions (强相互作用)
         strontium (锶)
         strontium 86 (锶-86)
         strontium 89 (锶-89)
         strontium 90 (锶-90)
         strontium 92 (锶-92)
         strontium additions (锶添加物)
         strontium alloys (锶合金)
         strontium carbonates (碳酸锶)
         strontium ions (锶离子)
         strontium isotopes (锶同位素)
         strontium silicates (硅酸锶)
         strontium sulfates (硫酸锶)
         strophanthin (毒毛旋花甙)
         structural beams (支梁)
         structural buckling (结构屈曲)
         structural materials (结构材料)
         structural models (结构模型)
         structure crystal
         structure factors (结构因子)



         subcriticality (次临界)
         subcutaneous injection (皮下注射)
         sublethal irradiation (亚致死性辐照)
         submarine canyons (海底峡谷)
         submarines (潜艇)
         submerged arc welding (埋弧焊)
         subsidence ground
         subsidies (补贴)
         subsonic flow (亚声速流)
         substitution equivalent (替代当量)
         substitution techniques (替换技术)
         substrates (底质)
         subsurface environments (井下环境)
         subsurface structures (地下构筑物)
         suburbs (郊区)
         sucker rod pumps (杆式泵)
         sucrose (蔗糖)
         sudan (苏丹)
         sudbury neutrino observatory (消德贝里中微子监测所)
         sugar (糖)
         sugar beets (制糖甜菜)
         sugar cane (甘蔗)
         sugar industry (制糖工业)
         sugars (糖)
         sulfadiazine (磺胺嘧啶)


         sulfamic acid (氨基磺酸)
         sulfanilic acid (磺胺酸)
         sulfate minerals (硫酸盐矿物)
         sulfate-reducing bacteria (硫酸盐还原细菌)
         sulfates (硫酸盐)
         sulfation (硫酸盐化作用)
         sulfhydryl compounds (氢硫基化合物)
         sulfiban process (SULFIBAN法)
         sulfide minerals (硫化物矿物)
         sulfides (硫化物)
         sulfonamides (磺胺类)
         sulfonates (磺酸盐)
         sulfonation (磺化)
         sulfones (砜)
         sulfonic acids (磺酸)
         sulfur (硫)
         sulfur 38 (硫-38)
         sulfur 43 (硫-43)
         sulfur complexes (硫配合物)
         sulfur dioxide (二氧化硫)
         sulfur ions (硫离子)
         sulfur isotopes (硫同位素)
         sulfur ores (硫矿石)
         sulfur oxides (氧化硫)
         sulfur sulfides (硫)






         surveillance medical
         survey radioactivity
         surveys (测量)
         survival curves (存活曲线)
         survival fraction (存活分数)
         survival time (存活时间)
         susceptibility magnetic
         suspensions (悬浮物)
         susquehanna river (萨斯奎汉纳河)
         sustainable development (可持续发展)
         sv 40 virus (猴病毒40)
         sv40 virus (sv40病毒)
         sw groups (SW群)
         swaging (型锻)
         swamps (沼泽)
         swaziland (斯威士兰)
         sweat (汗液)
         sweat glands (汗腺)
         sweden (瑞典)
         sweep efficiency (波及系数)
         swelling (肿胀)
         swimming (游泳)
         swimming pools (游泳池)
         swine (猪)
         swirl flow (涡流)


         switches (开关)
         switchgrass (柳枝稷)
         switching diodes (开关二极管)
         switzerland (瑞士)
         syenites (正长岩)
         symbiosis (共生)
         symbiotic stars (共生星)
         symbolic logic (符号逻辑)
         symmetry (对称性)
         symmetry breaking (对称破缺)
         symmetry groups (对称群)
         sympathectomy (交感神经切除术)
         sympathetic nervous system (交感神经系统)
         symplectic groups (辛群)
         symposia (讨论会)
         symptoms (症状)
         synchronization (同步)
         synchronous cultures (同步培养)
         synchrotron radiation (同步辐射)
         synchrotron radiation sources (同步辐射源)
         synchrotrons (同步加速器)
         syncrude (合成原油)
         synergism (协同效应)
         syngas process (合成气工艺)
         synovia (滑液)