“researching aircraft preliminary design”的概念、定义、翻译、参考文献-科学参考

单词	researching aircraft preliminary design
释义	researching aircraft preliminary design Encyclopedia 工学试验研究飞机总体设计释 researching aircraft preliminary design试验研究飞机总体设计形成和逐步细化、深化并初步验证试验研究飞机顶层产品定义的关键设计工作。
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