The qualification of such a test is only valid for the process sequence carried out during the multiprocess procedure test.

对这样验鉴定仅对多种焊接工艺验时所进行过程顺有效。

The article has described the structure and working principle of multiprocess composite die for automobile deafener closure.

介绍了汽车消声器隔板多工复合模具结构、工作原理。