primary gluing

• 一次胶合

primary gluing的用法和样例：

例句

1. This introduces the harmfulness of glue of gears, analyses the reasons of glue and the method of preventing gears from gluing.
   介绍齿轮齿面胶合的危害，分析胶合的产生原因及防止齿面胶合的方法。