auger drill

• 回转式钻岩机,螺旋钻

auger drill的用法和样例：

例句

1. The spiral drill collars are being tried to use.
   螺旋钻链正在试用。
2. The conclusion presents important references for design and selection of auger drills.
   研究结果对螺旋钻具的设计和选用具有重要指导意义。