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- Project Contents: Dimethyl carbonate (DMC) is widely used in medicine, pesticide, composite material, coloring matter, lubricating oil additive, food flavoring agent and electron chemistry etc. 建设内容：碳酸二甲酯(DMC)在医药、农药、合成材料、染料、润滑油添加剂、食品增香剂、电子化学品等领域获得广泛应用。
- We have three periods of chemistry a week. 我们一星期三节化学课。
- The scientist probed into the secrets of chemistry. 这位科学家探索了化学的种种奥秘。
- Chemistry was her favourite subject at school. 她上学时最喜欢化学。
- No one can cope with him in Chemistry. 在化学方面，谁也比不上他。
- I am not good at organic chemistry. 我的有机化学学得不好。
- We will do a Chemistry experiment this Friday. 这个周五我们要做化学试验。
- He is an authority in the region of chemistry. 他是化学界的权威。
- I have only a rudimentary grasp of chemistry. 我只掌握了化学的初步知识。
- I have lost my interest in chemistry. 我对化学已不感兴趣。
- He was still devoted to the study of chemistry. 他仍专心致力於化学研究。
- The transmitter was pulsed by an electron tube. 电子管使发射器产生脉冲波。
- Physical chemistry is Greek to me. 我对物理化学一窍不通。
- The chemistry of petroleum and its derivatives. 石油化学石油及其复合物的化学
- The chemistry of stars and interstellar space. 天体化学关于星和星际空间的化学
- An electron tube having a cathode and an anode. 电子二极管有一个阳极和一个阴极的电子管
- My son is studying physical chemistry but it's all Greek to me. 我儿子正研究物理化学，但我对此一窍不通。
- She was professor of chemistry at Chicago University. 她曾是芝加哥大学的化学教授。
- The number of electron pairs an atom can share with other atoms. 共用电子对数，共价一个原子与其他原子共用的电子的对数
