in recent years, the artificial earth satellite measured the size of the earth more precise.
近年来,由人造地球卫星测得的地球大小更为精确。
the result is satisfactory by using a method of the artificial earth satellite orbit determination from range rate observations to fit the free-flight trajectory of rocket.
用人造地球卫星轨道计算的测速定轨方法,去拟合火箭飞行弹道的自由段,取得了比较满意的结果。
in this paper the solution of the mean elements which is suitable for the first order perturbation theory of artificial earth satellite is discussed.
本文对人造卫星一阶摄动理论中采用的平均根数的解法进行了讨论。
unidentified man: the first artificial earth satellite in the world has now been created. this first satellite was, today, successfully launched in the ussr.