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- Water contains hydrogen and oxygen. 水含有氢和氧。
- ortho hydrogen 正氢
- Has undergone a religious conversion. 经历一次宗教信仰的转变。
- Water is composed of hydrogen and oxygen. 水由氢和氧组成。
- A proposition obtained by conversion. 逆命题通过换位得到的命题
- For a disubstituted complex, MA4B2, the planar arrangement gives three isomers, the familiar ortho, meta, and para arrangements of organic chemistry. 对于双取代络合物MA4B2,其平面排列有三个异构体,常见的为有机化学中的邻位、间位和对位排列。
- Conversion to gas central heating will save you a lot of money. 改用煤气集中供暖将节省大笔开支。
- Water is composed of the elements hydrogen and oxygen. 水是由氢元素和氧元素组成的。
- The separation of meta nitrochlorobenzene from the waste fluid of para ,ortho nitrochlorobenzene production was investigated in this paper. 探讨、分析了对、邻硝基氯苯生产废料中间硝基氯苯的可能分离方法,确定采用恒沸减压精馏法为最佳。
- The conjugated double bond in tung oil molecular with high activity can take place substitution reaction with one of ortho or para hydrogens of phenol. 桐油的共轭双键具有极强的反应活性,易与苯酚芳环上邻或对位的活性氢发生傅氏取代反应。
- Conversion of your heating system from coal to gas will be costly. 你把暖气系统由烧煤改造成烧瓦斯会花好多钱。
- He laughed to conver his nervousness. 用笑掩饰。
- Water may be resolved into hydrogen and oxygen. 水可以分解为氢和氧。
- Catalytic nitration of toluene occurs by use of nitric acid in the presence of bentonite metal nitrates with useful para selectivities,up to a para to ortho ratio 1.0. 在皂土硝酸盐催化下,甲苯能被浓硝酸对位选择性硝化,对邻硝化产物比率达1.0以上。
- Three Practical Situational Conver sations. 个实战经典对话)。
- May I have a convers :) ation with you? 我可以跟你谈一下吗?
- Bioconcentration potentials were determined for nitrobenzene,2,4-and 2,6-dinitrotoluene,and 3 nitrochlorobenzenes (ortho,meta and para) using the algae (S. 测定了硝基苯、2,4-二硝基甲苯、2,6-二硝基甲苯及硝基氯苯(邻、间、对)在绿藻体内富集及释放趋势。
- Coding Workshop Ringto...Mobile Ringtone Conver... 音乐剪切工具Ringtone C...
- Hardware Design of a High Speed Para. 高速并行图形系统硬件设计。
- The hydrogen is the known the lightest element. 氢是已知的最轻的元素。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries