管板锻件需要量很大，但存在着较严重的生产质量问题。

A great quantity of tube plate forgings is needed, but quality problem exists in present production.

youdao

管板锻件需要量很大，但存在着较严重的生产质量问题。

A great quantity of tube plate forgings is needed, but quality problem exists in present production.

youdao