A hole in the body ACTS as a conduit to transmit coolant under considerable pressure to the tip of the drill.

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。

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A hole in the body ACTS as a conduit to transmit coolant under considerable pressure to the tip of the drill.

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。

youdao