“helicopter”的概念、定义、翻译、参考文献-科学参考

单词	helicopter
释义	helicopter 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	basal layer basal leaf basal metabolic rate Basal Metabolism basal metabolism basal nuclei basal piece basal placenta basal placentation basal plane basal plate basal quaternion element basal stage liquid rocket engine basal stock，stocked herd basalt basalt fiber basaltic achondrite basaltic achondrite best initial basaltic andesite basaltic layer basaltic lunar meteorite basaltic martian meteorites basal transcription factors Basanfan Ba Sang and Her Younger Brothers

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。