The spherical segment cone module of small lift to drag ratio vehicles is the optimum shape than others.
小升阻比返回舱的形状以球冠倒锥形为最优。
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Drilling with cone( drag) bit in the section.
此段地层采用牙轮（刀）头钻进。
应用推荐
模块上移
模块下移
不移动