It is a Slocum that has been modified to harvest the energy that it needs to operate its buoyancy-propulsion system from the sea itself.

这个斯洛克姆被改装从海中获取能源来运转它的浮力推动系统。

youdao

Skylifter plans to use several such drives to control the craft's horizontal motion and to aid a buoyancy-control system within the envelope in moving the vehicle up and down.

Skylifter计划使用数个上述装置来控制飞行器的水平运动，并在表膜层内置浮力控制系统来调节垂直升降。

youdao

Skylifter plans to use several such drives to control the craft’s horizontal motion, and also to aid a buoyancy-control system within the envelope in moving the vehicle up and down.

Skylifter计划使用若干这种驱动器来控制飞船的水平运动，同时也辅助安装在气球内部的浮力控制系统操纵飞艇的升降。

youdao