“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	investment casting investment casting core investment casting of superalloy investment category Investment Center investment coefficient investment estimate investment estimation investment for urban development investment fund of the insured investment funds law investment in grassland irrigation works investment insurance investment model investment of hydropower station investment of language human capital Investment of social medical insurance fund investment pattern of smart city investment payback period investment portfolio Investment Project Risk investment regulation investment result coefficient investments in art Investor Protection Fund

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