叙述了勘探二号钻井平台升降齿轮修理及国产化更新的情况以及齿轮国产化过程中的一些经验。
The repairing and renewing of the jack gearing system on Kantan No. 2 platform are introduced and the experience of the process of its national production is reviewed and summarized.
本实用新型的齿轮回转推进器具有伸缩功能，能够完成传动、回转、升降三个不同的操作。
The gear turning propeller has a telescopic function and can complete three different kinds of operation of driving, turning and lifting.
传动系统的齿轮箱与滑动顶尖座为一体结构，升降灵活，操作方便。
Gear case of the gearing system and the gliding tailstock are integrative structure, lifting swiftly, operating easily.
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