diamond boring

• 金刚(石)镗孔(用金刚石刀镗孔)

diamond boring的用法和样例：

例句

1. As the diamond tip of the drill revolves, it is lubricated by mud.
   在钻机的金刚钻头旋转的时候，泥浆便进行了润滑。
2. The diamond ring was instantly turned into a rope which tied Wu-k'ung fast.
   金刚圈转眼化为一条捆仙绳，把猴王捆个结实，动弹不得。