“civil aviation”的概念、定义、翻译、参考文献-科学参考

单词	civil aviation
释义	civil aviation Encyclopedia 工学民用航空释 civil aviation民用航空使用航空器从事除了国防、警察和海关等国家航空活动以外的航空活动。分为运输航空和通用航空两部分。简称民航。
随便看	projective plane projective plane crossing number projective plane curve projective plane dissection projective point projective point ranges projective principal normal projective product projective property projective quadric projective relation projective representation projective resolution projective scale projective scaling method projective scheme projective second-order curve projective set projective space projective space over a scheme projective special linear group projective special orthogonal group projective special unitary group projective spectrum projective spectrum of a ring

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