一旦作业者遇到物流相关问题时，海上钻机可能要闲置数日。
Offshore rigs could be idled for days while the operator worked out logistical issues.
陆地石油钻机、海上石油钻井平台和千万吨级炼油设备实现自主制造。
China also has patented onshore oil RIGS, offshore oil platforms and 10 million-ton-a-year refinery plants.
陆地石油钻机、海上石油钻井平台和千万吨级炼油设备实现自主制造。
China also has patented onshore oil RIGS, offshore oil platforms and 10 million-ton-a-year refinery plants.
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