您要查找的是不是：
- dry chemical extinguisher = dry-chemical extinguisher 干粉灭火器
- Use dry chemical fire extinguisher. 用干粉灭火器。
- The extinguisher is filled with chemical foam. 这个灭火器里充满了化学泡沫。
- The fire extinguisher is filled with chemical foam. 这个灭火器充满了化学泡沫。
- 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。
- dry chemical extinguishing agent 干粉灭火剂
- dry chemical extinguishing system 干粉灭火系统
- 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。
- dry chemical extinguishing method 干式化学灭火法
- wet chemical extinguishing system 湿式化学灭火装置
- 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。
