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


         oceanography (海洋学)
         oceans (海洋)
         octadecanoic acid (十八酸)
         octane (辛烷)
         octane number (辛烷数)
         octanoic acid (辛酸)
         octenes (辛烯)
         octet model (八重态模型)
         octyl alcohols (辛醇)
         odd-even nuclei (奇-偶核)
         odd-odd nuclei (奇-奇核)
         odocoileus (鹿)
         odor (气味)
         odorants (添味剂)
         odorization (添味作用)
         oecd (经济合作与发展组织)
         oer (氧效应增强比)
         off-gas systems (废气系统)
         off-highway use (越野用)
         off-peak power (非峰值功率)
         office buildings (办公大楼)
         office furniture (办公家具)
         office of technology assessment (技术评估办公室)
         offshore drilling (海底钻探)
         offshore operations (近海作业)


         offshore platforms (近海平台)
         offshore sites (近海厂址)
         offshore surveys (近海测量)
         offsprings (子孙)
         ogra (OGRA装置)
         ohio (俄亥俄州)
         ohio river (俄亥俄河)
         ohm law (欧姆定律)
         ohmic resistance (欧姆电阻)
         oil burners (油燃烧嘴)
         oil fields (油田)
         oil palms (油棕榈)
         oil residues (油渣)
         oil sand tailings (油砂尾渣)
         oil sands (含油砂)
         oil saturation (含油饱和度)
         oil shale deposits (油页岩矿床)
         oil shale industry (油页岩工业)
         oil shale mining (油页岩开采)
         oil shales (油页岩)
         oil skimmers (撇油器)
         oil spills (溢油)
         oil wells (油井)
         oil yields (油产量)
         oil-exporting countries (石油输出国)


         oil-filled cables (充油式电缆)
         oil-importing countries (石油输入国)
         oil-water separators (油水分离器)
         oils (油)
         ointments (软膏)
         okinawa (冲绳)
         oklahoma (俄克拉何马州)
         olade (拉丁美洲能源组织)
         old faithful geyser (老忠实间歇泉)
         olefins (链烯烃)
         oleic acid (油酸)
         olein (油精)
         oleoresins (树脂油)
         olfactory bulbs (嗅球)
         oligocene epoch (渐新世)
         oligonucleotides (低聚核苷酸)
         oligophenylenes (低亚苯基)
         oligosaccharides (寡糖)
         olive oil (橄榄油)
         olive trees (橄榄树)
         olives (橄榄)
         olivine (橄榄石)
         oman (阿曼)
         omega particles (Ω粒子)
         omentum (网膜)



         ope model (单π介子交换模型)
         opec (石油输出国组织)
         open configurations (开端位形)
         open pit mining (露天开采)
         open-circuit voltage (开路电压)
         open-loop control (开环控制)
         openings (孔)
         operating cost (运行费用)
         operating systems computer
         operation (运行)
         operation reactor
         operational amplifiers (运算放大器)
         operations research (运筹学)
         operator product expansion (算符乘积展开)
         operators mathematical
         operators quantum field theory
         ophthalmology (眼科学)
         opiates (鸦片剂)
         opium (鸦片)
         opossum (负鼠)
         optical activity (旋光性)
         optical computers (光学计算机)
         optical density (光密度)
         optical dispersion (光色散)
         optical equipment (光学设备)





         ornamental plants (观赏植物)
         ornithine (鸟氨酸)
         ornl (橡树岭国家实验室)
         orogenesis (造山运动)
         orotic acid (乳清酸)
         orthoclase (正长石)
         orthogonal transformations (正交变换)
         orthoiodohippurate (邻碘马尿酸盐)
         orthoptera (直翅目)
         oryza (稻属)
         oscillation modes (振荡模式)
         oscillations (振荡)
         oscillations plasma
         oscillator strengths (振子强度)
         oscillators (振荡器)
         oscillographs (示波器)
         osha (职业性安全及保健管理局)
         osmium (锇)
         osmium 163 (锇-163)
         osmium 170 (锇-170)
         osmium borides (硼化锇)
         osmium complexes (锇配合物)
         osmium compounds (锇化合物)
         osmium isotopes (锇同位素)
         osmosis (渗透)


         osteoblasts (成骨细胞)
         osteocytes (骨细胞)
         osteodensitometry (骨密度测量术)
         osteomyelitis (骨髓炎)
         osteoporosis (骨质疏松)
         osteoradionecrosis (放射性骨坏死)
         osteosarcomas (骨肉瘤)
         otec (海洋热能转换)
         other organic compounds (其它有机化合物)
         ottawa river (渥太华河)
         otters (水獭)
         otto cycle (奥托循环)
         otto process (奥托过程)
         ouabain (乌巴因)
         outages (断供)
         outdoors (室外)
         outer continental shelf (外陆架)
         outgassing (排气)
         outlet structures (出口构筑物)
         output (产量)
         ova (卵子)
         ovalbumin (卵白蛋白)
         ovaries (卵巢)
         oven coke (炉焦)
         ovens (烤箱)


         overburden (覆盖层)
         overcurrent (过电流)
         overhauser effect (奥佛豪塞效应)
         overhead power transmission (架空输电)
         overthrust belt (逆冲带)
         overvoltage (过电压)
         ovulation (排卵)
         ownership (所有权)
         oxadiazoles (噁二唑)
         oxalaldehyde (草醛)
         oxalates (草酸盐)
         oxalic acid (草酸)
         oxazoles (噁唑)
         oxetane (氧杂环丁烷)
         oxidants (氧化剂)
         oxidases (氧化酶)
         oxidation (氧化)
         oxidation state (氧化态)
         oxide minerals (含氧矿物)
         oxides (氧化物)
         oxidizers (氧化剂)
         oxidizing agents (氧化剂)
         oxidoreductases (氧化还原酶)
         oximes (肟)
         oxine (8羟基喹啉)


         oxoacetic acid (氧代乙酸)
         oxocarboxylic acids (氧代羧酸)
         oxonium ions (氧鎓离子)
         oxycarbides (碳氧化物)
         oxychlorides (氯氧化物)
         oxygen (氧)
         oxygen 12 (氧-12)
         oxygen 13 (氧-13)
         oxygen 14 (氧-14)
         oxygen 14 target (氧-14靶)
         oxygen 15 (氧-15)
         oxygen 15 target (氧-15靶)
         oxygen 16 (氧-16)
         oxygen 16 target (氧-16靶)
         oxygen 17 (氧-17)
         oxygen 17 reactions (氧-17反应)
         oxygen 17 target (氧-17靶)
         oxygen 18 (氧-18)
         oxygen 18 reactions (氧-18反应)
         oxygen 18 target (氧-18靶)
         oxygen 19 (氧-19)
         oxygen 20 (氧-20)
         oxygen 21 (氧-21)
         oxygen 22 (氧-22)
         oxygen 23 (氧-23)


         oxygen 24 (氧-24)
         oxygen 25 (氧-25)
         oxygen 26 (氧-26)
         oxygen 27 (氧-27)
         oxygen 28 (氧-28)
         oxygen complexes (氧配合物)
         oxygen compounds (氧化合物)
         oxygen enhancement ratio (氧效应增强比)
         oxygen enrichment (富氧)
         oxygen ions (氧离子)
         oxygen isotopes (氧同位素)
         oxygen plants (制氧厂)
         oxygen potential (氧势)
         oxygenases (氧酶)
         oxysulfides (硫氧化物)
         oxytetracycline (土霉素)
         oxytocin (催产素)
         oysters (牡砺)
         ozone (臭氧)
         ozone layer (臭氧层)
         ozonization (臭氧化)