例句與造句

1. “ subcontractor will be responsible for weld mapping all pressure boundary welds and attachment welds to pressure boundary pipe 。
   “分包商負(fù)責(zé)將管端切削至合適的尺寸、坡口加工和組對(duì)焊接。 ”
2. It's difficult to find attachment weld in a sentence. 用attachment weld造句挺難的