Lower the drillpipe joint into the mouse hole, and remove air tugger and lifting cap.
下放单根进小鼠洞,摘掉气动绞车和提丝。
Lower the drillpipe joint into the mouse hole, and remove air tugger and lifting cap.
下放单根进小鼠洞,摘掉气动绞车和提丝。
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