这个词是什么意思？
An independent Federal agency established in 1958. It conducts research for the solution of problems of flight within and outside the Earth's atmosphere and develops, constructs, tests, and operates aeronautical and space vehicles. (From U.S. Government Manual, 1993)
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D018557 · MeSH 2026。
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