Its drilling system USES a 380-ton protective casing over the wellhead that is about the size of a six-story office building.

它的钻探系统采用了重380吨、约六层办公大楼大小的保护罩(防爆装置)来保护井口。

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Its drilling system USES a 380-ton protective casing over the wellhead that is about the size of a six-story office building.

它的钻探系统采用了重380吨、约六层办公大楼大小的保护罩(防爆装置)来保护井口。

youdao