The mechanism of CTA preparation about the immune path to kill the mite was discussed, too.
本文还对CTA制剂杀灭螨虫的免疫机制进行了探讨。
A new path for the preparation of leaf alcohol with 3-chloropropanol, triphenylphosphine and propionaldehyde through Wittig reaction was studied.
本文研究了以3-氯丙醇，三苯基膦和丙醛为原料利用威蒂希反应合成叶醇的新路线。
Preparation method and chief process conditions of food grade calcium hydrogen phosphate from Kiln - way phosphoric acid are investigated and corresponding flow path is presented.
探讨了由窑法磷酸制备食品级磷酸氢钙的方法和主要工艺条件，提出了相应的工艺流程。
Based on different types and characteristics of gold ore sample, this paper proposes 5 sorts of flow path of sample preparation.
本文根据试验结论，按不同金矿样类型特性，分别提出了五种制样流程。
Based on different types and characteristics of gold ore sample, this paper proposes 5 sorts of flow path of sample preparation.
本文根据试验结论，按不同金矿样类型特性，分别提出了五种制样流程。
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