“operation certification”的概念、定义、翻译、参考文献-科学参考

单词	operation certification
释义	operation certification Encyclopedia 工学飞行标准管理释 operation certification运行合格审定国家民用航空管理部门按照法律、法规和民用航空规章对民用航空运营实施行政许可的活动。
随便看	Sextus Propertius sexual allocation sexual asphyxia sexual assault sexual attitudes sexual attraction sexual behavior Sexual Behavior of Human Male/Female sexual behavior of livestock sexual behaviour sexual body sexual cell sexual cheating sexual communication sexual conflict sexual cycle sexual desire sexual desire criminal psychology sexual development sexual differentiation sexual dimorphism sexual dysfunction sexual dysfunction identification sexual dysgenesis sexual enchantment

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。