“直升机”的概念、定义、翻译、参考文献-科学参考

单词	直升机
释义	直升机 Encyclopedia 工学直升机释 helicopter直升机以发动机驱动旋翼旋转作为升力和推进力来源，能垂直起落、悬停并能进行前飞、侧飞、后飞、定点回转等可控飞行的重于空气的航空器。
随便看	connected number connected pair of functors connected part connected path connected piece connected polyhedron connected product connected region connected relation connected ring connected scheme connected semigroup connected sequence connected sequence of functors connected set Connected Singapore Plan connected solvable group connected space connected square matrices connected sum connected sum decomposition connected surface connected topological space connected topology connected treatment

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。