... 弥缝圈 sealing ring 钳头 tong jaws 引擎,策念头 engine ...
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The Floormen remove the safety latch springs and the tong pins and change the tong jaws to match the size of the pipe or tubular to be made up.
钻工取下安全弹簧和大钳销子换上合适尺寸的钳头以匹配钻杆或管子的尺寸。
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