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- Quantum chemical parameters of soman and other organophosphorus esters were calculated by using the CNDO/2 method. 用CNDO/2方法计算了梭曼和其他有机磷酸酯的量子化学参数。
- A new biotic index, the species pollution value (SPV) and the community pollution value(CPV), based on chemical parameters is presented. 依据水质化学参数和原生动物群落参数建立了一种新的生物指数：种类污染值（SPV）和群落污染值（CPV）。
- Correlation analysis among metallic elements and part of physical chemical parameters showed their relatively interdependency. 对金属元素及部分理化参数的相关分析表明其间的相关性较显著。
- Since microgel flooding involves complex physical and chemical changes, how to a-chieve physical and chemical parameters become very important during numerical simulation. 由于微凝胶驱涉及复杂的物理化学变化,在进行数值模拟时,如何求取物理化学参数变得很重要。
- Keywords Tibetan yak;yoghourt;chemical parameter;microbe; 西藏牦牛;发酵乳;理化;微生物;
- Longer chains affect sinking rates and thus likely help the diatom remain suspended in the upper part of the water column where physical and chemical parameters are more favorable for growth. 长链似乎降低了细胞的下沉速率，有助于硅藻生活在理化条件都比较适合生长的水体上层。
- 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。
- Keywords Nitroaromatics;Quantum chemical parameter;QSAR study;Toxicity; 硝基芳烃;量化参数;定量构效关系;毒性;
- 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。
