例句與造句

1. Plasma - arc welding ( paw ) may be used for hard surfacing , overlaying and fully automatic butt welding
   等離子弧焊可用于敷焊硬合金表面、堆焊和全自動(dòng)對(duì)接焊。
2. It's difficult to find plasma-arc welding (paw) in a sentence. 用plasma-arc welding (paw)造句挺難的