... well workover 修井 workover rig service oil well 释义油井修井作业 ; 油井修井作业 Well workover technology 修井工艺 ...
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Series self moving workover rig 自走式修井机 workover rig service oil well 油井修井作业 ; 释义油井修井作业 Design of hydraulic workover rig 液压修井机液压传动系统的设计 ..
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