automatic butt welding造句

例句与造句

1. Plasma - arc welding ( paw ) may be used for hard surfacing , overlaying and fully automatic butt welding
   等离子弧焊可用于敷焊硬合金表面、堆焊和全自动对接焊。
2. It's difficult to find automatic butt welding in a sentence. 用automatic butt welding造句挺难的