The paper introduces the manufacure process for the groove of a new form welding straight tee.

本文主要介绍了一种新形式焊接等径三通坡口的加工方法。

youdao

The paper introduces the manufacure process for the groove of a new form welding straight tee.

本文主要介绍了一种新形式焊接等径三通坡口的加工方法。

youdao