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- chemical selective membrane 化学选择膜
- It has been proved that it is economical and feasible to eliminate educt alkali from coarse sodium tungstate with electrodialysis method of negative ion (1) selective membrane. 研究表明：一价阴离子选择膜电渗析法从粗钨酸钠溶液中脱除游离碱是经济可行的。
- The experiment results confirme the significance of chemical selection and early distinguishment of anthracycline antibitics. 实验结果说明了蒽环类抗生素化学筛选的重要意义和早期鉴别的必要性。
- Eight strains, which produced anthracycline antibiotics, are obtained from 34 Actinomycetes through chemical selection using UV-visible spectra. 采用紫外-可见光谱定性的方法，对34株放线菌进行了化学筛选，其中8株产生蒽环类抗生素。
- With this method,the catalyst has high catalytic activity and chemical selectivity and can be reutilized.The reaction has higher yields、milder conditions and simpler workup. 该反应具有催化活性高、选择性强、反应条件温和、催化剂可以重复使用、在空气中稳定等特点，是由易得二元酸合成二元酮的新方法。
- 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。
- This thesis discusses the process and operational management of the 600 MW condenser cooling water systems at high concentration ratio in respect of chemicals selection and dosage. 主要从循环水处理药剂的筛选及其加药量，来讨论目前600MW机组高浓缩倍率下循环水处理的途径及运行管理。
- He is experimenting with a new chemical. 他正在实验一种新的化学制品。
- ion selective membrane 离子选择膜
- selective membrane 选择性膜
