钻头体中有个孔作为导管在相当大的压力下将冷却液传送到钻头顶端。
A hole in the body ACTS as a conduit to transmit coolant under considerable pressure to the tip of the drill.
对高风压潜孔钻头使用时钻头体崩块、掉齿等早期失效情况进行分析，找到其失效原因。
The failure cause was found by analyzing high pneumatic down-the-hole bit bursting crack and the other reasons in the early stage.
在结构上采用了三翼四齿的钻头体、弧槽形排粉沟槽，适用于硬、中硬、软岩的三种齿形。
The drill bit body has three wings four cylindrical tungsten carbide inserts and curved slots for removal of cuttings.
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