“Orbit coordinate system”的概念、定义、翻译、参考文献-科学参考

单词	Orbit coordinate system
释义	Orbit coordinate system Encyclopedia 工学参考框架释 Orbit coordinate system轨道坐标系统以地球质心为原点，Z轴指向瞬时天极方向，X轴指向历元时刻的平春分点在瞬时赤道面上的投影方向（实为瞬时真赤道上的某一个假想的春分点），Y轴与X轴和Z轴正交，从而构成的右手笛卡儿直角天球坐标系。
随便看	archives in the Purple Forbidden City archives in the Song Dynasty archives in the Sui Dynasty archives in the Tang Dynasty archives in the Wei, Jin, Southern and Northern Dynasties archives in the Yuan Dynasty archives lending service Archives Management archives management archives management in Qing dynasty archives management in the Ming dynasty archives management in the Sui dynasty archives management in the Tang Dynasty archives management in the Wei Jin and Southern and Northern Dynasties archives management in the Yuan Dynasty Archives Management in USSR: Theory and Practice archives management of engineering project archives management system archives management system of forest resources archives management work archives materials archives mold Archives Nationales of France archives network Archives of Agronomy and Soil Science

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。