Tough and lightweight compared to other protective casing on the market.
和市场上其他保护性外壳比起来，更结实，更轻。
One end of the protective casing is provided with a flaring for the butt-joint of the heat-insulation case.
在保护套的一端设有扩口，用于保温套间的对接。
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。
The paper introduced how to solve surface leakage of excavated pile with double protective casing and the better results have been achieved.
本文介绍采用双护筒解决挖孔桩地表水渗漏问题，取得了较好的效果。
The utility model relates to an electric fan, comprising a supporting part, a motor part, a fan blade, a protective casing and a display device.
本实用新型电风扇包括支撑部、电机部、扇叶、保护罩及显示装置。
The two-stage cementing technique was used for the protective casing of the horizonal well in Tahe oil field because of a long open-hole interval in secondary spudding.
塔河油田水平井由于第二次开钻裸眼段长，技术套管采用双级固井技术。
The two-stage cementing technique was used for the protective casing of the horizonal well in Tahe oil field because of a long open-hole interval in secondary spudding.
塔河油田水平井由于第二次开钻裸眼段长，技术套管采用双级固井技术。
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