英
[s'tepr'ɒkɪts]
美
[s'tepr'ɒkɪts]
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step-rockets的英文翻譯是什麼意思,詞典釋義與在線翻譯:
英英釋義
名詞 step rocket:
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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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