“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	trace fossil trace function trace gap trace ideal trace indicated criminal mind traceintersecting theory traceless matrix traceless tag traceless tensor trace level trace line trace mapping trace method trace minerals in coal Trace Model of word recognition trace norm trace of a commutator trace of a form trace of a function trace of a line trace of a linear transformation trace of a mapping trace of a matrix trace of an algebraic element trace of an algebra of sets

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。