The alteration rule of inequilateral Z-type steel thickness in butterfly pass is calculated and analyzed.

计算分析了不等边 Z 字钢在蝶式孔型中厚度变化的规律。

A new inequilateral organic polyamine, 2-aminoethyl-bi(3-aminopropyl)amine, was synthesized by the additional and hydrogenation reaction of aminoacetonitrile with acrylonitrile.

利用氨基乙腈及丙烯腈的亲核加成、氢化反应合成了一种新的不等臂有机多胺化合物2 -氨基乙基-二（3-氨基丙基）胺。

The alteration rule of inequilateral Z-type steel thickness in butterfly pass is calculated and analyzed on its construction property, which can give some information for production.

本文针对蝶式孔型的结构特点，计算分析了不等边不等厚Z字钢在蝶式孔型中边部厚度变化的规律，为生产实践提供参考。