single-cutting drill

This is single arm drill elementary starting up with a good stream line position. left arm moving?

这是基本单臂划水训练，起始时就有很好的流线形。

In addition to the fleetness connects single root, can also use at salvage the homework, search direction or demands the slow the artesian well tool that turn last, and drill the size rat hole use.

除快速接单根外，还可用在打捞作业，找寻方向或需要慢转的钻井工具上，以及钻大小鼠洞用。

Single hook, drill, labor organization, construction method, construction craft organization were introduced during the construction of well.

介绍了建井三处在平煤十矿新回风井井筒施工中采用单钧提升、手抱钻及相应的劳动组织、施工方法、施工工艺组织快速施工的经验。

The longer the single drill pipe , the lesser the critical compressive force of drill stem.

钻杆的单根长度越长, 钻柱所能承受的临界载荷越小.

Study on dynamic simulation research of single drill pipe based on finite element method

基于有限元法的单根钻杆动力学仿真模拟分析