autogenous weld造句
造句与例句手机版
- The weld area is protected from atmospheric contamination by a shielding gas ( usually an inert gas such as argon ), and a filler metal is normally used, though some welds, known as autogenous welds, do not require it.
- It's difficult to see autogenous weld in a sentence. 用autogenous weld造句挺难的
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