To raise drilling performance of new micro-drill, a novel method was advanced for reginding 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。
This means that to get water hot enough to raise steam, you have to drill down several kilometres.
这就意味着要得到足够热的水来使蒸汽上升，你就不得不把井向下挖掘几千米。
Taking use of the shock absorber, it can raise the service life for drill bit and drill tool, speed up drilling, get rid of drilling jumping, well protect surface equipments and drilling tools.
所以在钻井作业中采用减震器，对于延长钻头使用寿命，加快钻进速度、克服严重跳钻、保证正常钻井、保护地面设备及钻具是十分可靠的。
The use of sequential reaming head for raising is a new technology, which can make a small-sized drill to be used for boring a large-sized raise.
用迈步式扩孔刀头钻凿天井是一项新技术，该技术能够用小钻机钻凿大天井。
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。
The fungus is nearly ubiquitous, and is called the cavity in healthy persons's nasal cavity to drill the membrane table, but may raise many kinds of fungi.
真菌几乎无处不在，在健康人的鼻腔和叫腔钻膜表而可培养出多种真菌。
The fungus is nearly ubiquitous, and is called the cavity in healthy persons's nasal cavity to drill the membrane table, but may raise many kinds of fungi.
真菌几乎无处不在，在健康人的鼻腔和叫腔钻膜表而可培养出多种真菌。
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