1) the weir of double wall steel box
双壁钢套箱围堰
2) doubledwalled
双壁
3) double-wall drill tool
双壁钻具
1.
A double-wall drill tool has been developed to solve problems arising in the process of controlling the wellbore trajectory using conventional downhole mud motor and MWD in under-balanced drilling with aerated drilling fluid.
为解决在充气钻井液欠平衡压力钻井时,使用常规井下动力钻具和随钻测量仪器进行井眼轨迹控制中遇到的技术难题,研制了双壁钻具。
4) two cooled wall
双壁冷却
1.
A kind of new turblent flow in annular square channel with two cooled wall was designed on basic thermophoresis principle.
依据热泳基本原理,设计了一种新型湍流方环形双壁冷却式通道。
5) double-wall drill pipe
双壁钻杆
6) double wall tank
双壁罐
参考词条
补充资料：双套飞车
1.两头牲口拉的大车。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。