“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	mechanical energy Mechanical engineering handbook mechanical environment protection mechanical environment simulation test mechanical equilibrium mechanical equilibrium condition mechanical equivalent mechanical equivalent of heat mechanical equivalent of light mechanical excavator mechanical external cutting operations mechanical failure mechanical fault diagnosis mechanical features mechanical feedback mechanical fiber separation mechanical filter mechanical finger mechanical flotation cell mechanical function design mechanical governor mechanical grate incinerator mechanical gyroscope mechanical handling mechanical hemolytic anemia

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