raise drill

So, it is necessary to develop an indoor automatic test and handling system for product quality of diesel rock drill that can not only raise working efficiency but also reduce the labour intensity of the workers.

野外逐台凿岩实测检验产品质量的方法已不能适应，因此，有必要研制一套室内产品质量自动检测与处理系统，既能提高效率，又能降低工人劳动强度。

I ask Mawu to drill a hole on the iron with his sharp teeth, make a clear break of semicircle and raise the cover of the can.

我便教玛乌，先用尖牙扎穿铁皮，然后顺势划出一个半圆，这样就能将盒盖掀起了。

To raise drilling performance of new micro-drill, a method was advanced for rewinding of chisel edge.

为了提高新型微钻头的钻削性能, 提出了一种适合于微钻头的横刃修磨原理及方法.