您要查找的是不是：
- Combinating the siol column and potted plant experiment synthesize analysis that the soil alkalinity below 30% can be all improved by hydraulic and agricultural measure without the chemical amendment. 而碱化度大于30%25的土壤，必须在水利措施的配合下，利用化学改良剂才能达到改良的目的。
- Odor Reduction and Inhibitor of Nitrogen Losses by Chemical Amendments During Composting Pig Manure 调理剂在猪粪处理中的除臭及保氮作用
- 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。
- 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 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 two elements are synthesized by a chemical process. 这两种元素已经化学合成。
- A chemical compound consisting of such molecules. 二聚化合物这种聚合物形成化合物
- Relating to both physical and chemical properties. 物理和化学的与物理和化学特性均有关的
- Chemical breakdown caused by radiant energy. 光解作用由光能引起的化学分解
- A toxic chemical or other substance. 有毒的化学品或其它物质
- Petroleum can be used to produce various chemical products. 石油可用于生产多种化学产品。
