英语语法分析

Improvement in alkaline etching and smut removing before zincate treatment was summed up.

对浸锌前处理的碱蚀和出光的改进方法进行了总结。

A called "178" brightening agent for alkaline zincate bath was prepared by condensation, quaternization.

采用缩合、季碱化及酯化反应研制了一种“178”碱性锌酸盐镀锌光亮剂。

Zincate treatment is a normal pre-treatment for aluminium and its alloys, playing an important role in practical production.

浸锌是铝及其合金特殊前处理中较为常见的方式，在实际生产中占有重要地位。