The downhole hydrodynamic propulsor has yet to be improved since it has some limitations in operation.

但在井型的适应范围和小曲率造斜井的施工等方面,推进器的使用还存在一定的局限性,有待进一步完善和发展.

互联网

The undulatory biomimetic propulsor is a new underwater propulsor which swimming mode of Gymnarchus Niloticus.

波动仿生推进器是以“尼罗河魔鬼”为仿生对象设计的新型水下推进装置.

互联网