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

对这样一个试验鉴定仅对多种焊试验时所进行过程顺序有效。

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

汽车消声器隔板多序冲压复合模具结构、作原理。