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Terms for subject Drilling containing ON/OFF | all forms | in specified order only
EnglishChinese
clutch on-off离合器的离合
on-off bottom pressure drop钻头提离井底前后的压降
on-off connector通断接头
on-off connector双位接头
on-off servo device伺服开关
twist-off on the bottom钻头切屑刃在井底折断

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