Rocket propellant has barely changed in the more than 50 years since the launch of the first artificial satellite Sputnik.
自第一颗人造卫星史泼尼克发射以来，火箭推进剂在超过50年的时间内变化不多。
Accurate measurement of the orbit parameters of the artificial satellite was provided by radio and optical stations.
人造卫星的精确轨道参数将由无线电和光学观测站测量得出。
The differential equations that describe the artificial satellite motion are very complicated, and it is impossible to get the analytic express of solution.
描述人造卫星运动的微分方程非常复杂，不可能给出解的解析表达式。
According to the practical instance of the apparatus modules of artificial satellite, the layout optimization models of the difform graph elements are discussed.
依照卫星仪器舱布局问题的实际应用状况，讨论多种图元的布局优化模型。
According to the practical instance of the apparatus modules of artificial satellite, the layout optimization models of the difform graph elements are discussed.
依照卫星仪器舱布局问题的实际应用状况，讨论多种图元的布局优化模型。
应用推荐