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rocketry英英字典_rocketry剑桥英语解释_rocketry柯林斯英文解释_歐米惠必应词典
歐米惠必应词典

rocketry

R 开头单词

柯林斯词典

    rocketry /ˈrɒkɪtrɪ/

  • 1. N the science and technology of the design, operation, maintenance, and launching of rockets 火箭學; 火箭技術

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