step-rockets

 
[s'tepr'ɒkɪts]     [s'tepr'ɒkɪts]    
  • 多级火箭
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step-rockets的英文翻译是什么意思,词典释义与在线翻译:

英英释义

名词 step rocket:
  1. a rocket having two or more rocket engines (each with its own fuel) that are fired in succession and jettisoned when the fuel is exhausted

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临近单词

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