... preliminary dip 预浸渍 preliminary purification 初步净化 preliminary reading 预先读出 ...
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This analytic method introduced direct alkaline hydrolysis, omitted laborious preliminary purification steps of samples prior to GC, and the method was simple and convenient.
该方法引入了直接碱水解皂化烟叶及主流烟气粒相组分，省去了一般烟草样品测定中的所需的预分离过程。
This paper introduces nanofiltration for nickel plating rinse water treatment in small-scale test, industrial practice and preliminary purification of nickel sulfate, respectively.
本文主要介绍了用纳滤膜处理电镀镍漂洗水的小试研究、工业实践及硫酸镍初步纯化研究。
The paper deals with the preliminary study on the simple purification process of water quality in the estuarine area and gives a simple treatment of water for larval nursing of Penaeus sinensis.
本文就河口区的简易水质净化方法作了初步探讨，并提出了中国对虾育苗用水的简易处理方法。
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