offshore rig
参考词典中offshore rig的常规释义：
基本释义
- 海上钻机，海洋钻机，海洋钻井设备
英英解释
1个名词解释
- drilling rig consisting of an offshore platform (floating or fixed to the sea bed) from which many oil wells can be bored radially
[同] drilling platform, offshore rig
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