多级火箭

• step rocket
• multistage rocket
• multi stage rocket
• staged rocket
• staged vehicle
• multiple-step rocket
• composite rocket
• rocket train

参考释义

多级火箭

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例句

1. 制造多级火箭的一种方法是把各级火箭并排放在底部。
   One of the ways to make step rockets is to put the stages side by side at the bottom.