self-propelled oil rig deck officer 自走式石油钻井平台甲板高级船员
self-propelled drilling rig captain 自走式钻机队长
self-propelled drill rig 自航式钻井平台
self-propelled workover rig 自走式修井机
self-propelled drilling rig mate 自走式钻机大副
self-propelled drilling rig chief engineer 自走式钻机总工程师
self-propelled drilling rig first engineer 自走式钻机工程师
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