多级火箭是装有一台以上发动机的火箭。

These were rockets with more than one engine.

youdao

该方法可以快速地进行多级火箭的飞行方案设计。

This approach is efficient for flight program design of multi-stage rockets.

youdao

该方法可以快速地进行多级火箭的飞行方案设计。

This approach is efficient for flight program design of multi-stage rockets.

youdao