Nanocatalysts were prepared by combining the method of precipitation with that of phase transfer.
通过沉淀法和相转移法的结合制备纳米催化剂。
Normality of monthly and seasonal precipitation is discussed based on the data of 35 stations. Some method of precipitation normalization are compared.
本文讨论了我国35个测站的月、季降水量以及按区域平均降水量的正态性问题。同时，研究比较了各种降水量正态化的方法和效果。
The content of casein can be used as a index of quality for the milk, which can be determined by the method of isoelectric precipitation.
牛奶中酪蛋白含量是衡量牛奶质量的一个重要指标，采用蛋白质等电沉淀法可测定其含量。
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