翻译成中文:It is used to lift sections of pipe,which are lowered into the hole made by the drill.
问题描述:
翻译成中文:It is used to lift sections of pipe,which are lowered into the hole made by the drill.
答
它是用来抬起部分管道,然后降低到由钻头打出的孔中。
答
它过去被用来抬起部分管道,那些被降低到由钻头打出的孔中。
答
它被用来举起进入被钻孔机挖的洞之内被降低的管的区段.