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The correct size and type bit breaker is to be on the rig floor.
钻台上有合适尺寸和种类的钻头盒。
youdao
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Remove breaker and carefully lower bit through rotary table.
卸掉卸扣器，下放钻柱让钻头缓慢通过转盘。
youdao
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Remove breaker and carefully lower bit through rotary table.
卸掉卸扣器，下放钻柱让钻头缓慢通过转盘。
youdao