The Driller is to ensure all rig tongs have two snub lines attached for safety.
司钻要确认每个大钳有安全尾绳,以确保安全.
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Economy and reliability are the two major problems the packaging and operation of drill rig engine.
钻机柴油机的选型、配套和使用,既有经济性问题,又有可靠性问题.
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Its changeable angle mechanism is of vital importance to the integral function of the rig.
其变角机构关系到钻机的整体性能.
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This stimulates us to research on VVVF asynchronous motors for AC driving rig.
相应地也带动了对交流传动钻机用变频调速异步电动机的研究.
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Rig tong pins, shackle pins and bolts must be secured with the proper size split pins.
大钳销子,卸扣的销子和螺栓必须配有合适尺寸的开口销.
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在进入一个很深的岩洞之前,光是装配绳梯和建立供应基地就需要八天之久. (makeadescent下降)
《用法词典》
