“preliminary design of helicopter”的概念、定义、翻译、参考文献-科学参考

单词	preliminary design of helicopter
释义	preliminary design of helicopter Encyclopedia 工学飞机设计释 preliminary design of helicopter直升机总体设计形成和逐步细化、深化并初步验证直升机顶层产品定义的关键设计工作。
随便看	Customs War Cusuco National Park CUSUM cut cut-and-choose technique cut and fill mining method cut and trial method cut-and-try method cutaneous anthrax cutaneous appendages cutaneous circulation cutaneous needle therapy cutaneous receptor cutaneous respiration cutaneous sensation cut axiom cutback cutback method cutch，black catechu cut continuum cut edge cut-edge cut-elimination cut-elimination theorem Cutervo National Park

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。