钻井船壳体或者其它海洋钻井船舶的开口部分，钻井设备可以通过其中。

The opening in the hull of a drillship or other offshore drilling vessel through which drilling equipment passes.

youdao

我们是一家注册于中国深圳经济特区的专营内陆及海洋油田钻井设备的合资企业。

We are a Joint Venture company, registered in Shenzhen Special Economic Zone, China, specialized in supplying drilling equipment for both on-land and off-shore oilfield.

youdao

柴油发电机组是海洋钻井平台中的重要设备。

There are many ottshore rig running on China sea.

youdao