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- Chemical constituti on 化学结构
- A reactor is a container for chemical reaction. 反应器是进行化学反应的容器。
- The chemical symbol for copper is "Cu". 铜的化学符号是Cu。
- We are doing a chemical experiment. 我们正在做化学实验。
- A ban was imposed on the use of chemical weapons. 化学武器已被禁止使用。
- My major is the subject of chemical engineering. 我的专业是化学工程学。
- Ammonia is a chemical substance. 氨是种化学物质。
- A chemical sprayed or dusted on plants to cause the leaves to fall off. 落叶剂一种化学药剂，喷洒在植物上可使叶脱落
- Studies on Chemical Constituents of Smilax china L. 菝葜化学成分的研究。
- CHEMICAL STUDIES ON ALISMA ORIENTALIS JUZEP. 泽泻化学成分的研究。
- A chemical derived from petroleum or natural gas. 石油化学制品从石油或天然气中提炼出的化学产品
- Beware how you handle the toxic chemical. 小心处理有毒的化学药品。
- The chemical can behave as an acid. 这种化学制品能起酸的作用。
- Some chemical compounds can be resolved by heat. 一些化学化合物可以通过加热分解。
- I am not familiar with chemical terms. 我不熟悉化学术语。
- He devoted his life to chemical research. 他一生从事化学研究。
- He is experimenting with a new chemical. 他正在实验一种新的化学制品。
- The fluid on the floor was a harmless chemical. 在地板上的液体是无害的化学制品。
- Malathion is a chemical that is sprayed on crops. 马拉硫磷是一种喷洒在农作物上的化学药品。
- The two elements are synthesized by a chemical process. 这两种元素已经化学合成。
