二级什么意思_有道词典 ... 二级胺 secondary amine; 二级变换 two-dimensional transform; 二级标准 secondary standard; ...
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... 仲醋纤 secondary air 辅空气；二次空气 secondary amines 副抗氧化剂 secondary cellulose acetate ...
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... 仲醋纤 secondary air 辅空气；二次空气 secondary amines 副抗氧化剂 secondary cellulose acetate ...
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aromatic secondary amines 芳香族仲二胺
The paper was introduction the N-Tallow-1,3-diaminopropane of secondary amines and production process and application.
本文介绍了N- 烷基-1，3- 丙撑二胺的反应原理、生产工艺及其应用。
Due to secondary amines existed in some accelerants, which is the main source of nitrosamine, so it is considered to use a new type of accelerant.
由于某些促进剂中含有仲胺，这是亚硝胺的主要来源，因此人们正在考虑使用一类新的促进剂。
This paper were introduced the production method and reaction mechanism of fatty primary and secondary amines, was studies also on optimum reaction condition.
本文叙述了脂肪伯胺和肿胺的生产方法及反应机理，研究了最佳反应条件。
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