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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
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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
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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