multiple welding造句

例句与造句

1. The etched section also reveals that multiple weld passes were made over the top of the original submerged arc weld pass .
   从酸蚀断面还可以看出：在原自动埋弧焊的上面覆盖有多层焊道。
2. It's difficult to find multiple welding in a sentence. 用multiple welding造句挺难的