半潜式钻井船 semisubmersible drilling vessel ; Semi-submersible rig
动力定位半潜式钻井船 dynamic-positioning semisubmersible rig
随着技术的进步，半潜式钻井平台和钻井船不断更新换代，额定作业水深和钻深能力相应增大。
Continued technological advances are pushing the rated depth of underwater operation and drilling capacity to record highs.
深海石油开发大多采用半潜式平台、钻井船等浮式钻井装置进行钻井作业。
Semi-submersible platform, drilling ship and other floating drilling devices are mostly used to drill in the deep-sea oil development.
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