“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	optical space astronomy optical space division switching，OSDS optical spectral range optical spectrometer optical spectrometer for rock & mineral analysis and test optical spectroscopy optical spectrum optical spectrum, light spectrum optical spectrum measurement method optical spin orientation optical spintronics optical Stark effect optical stimulated luminescence dating optical storage optical storage materials optical subsurface damage optical sun optical surface optical surface flaws optical surface imperfection optical surface roughness optical surveying instruments optical suspended sediments determinator optical switch optical switching

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。