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。
Sputnik - the first artificial satellite - is launched by the Soviet Union on October 4, 1957, as a global positioning system for precise weapon delivery and paves the way for GPS as we know it today.
1957年10月4日，苏联发射了首颗人造卫星“斯普特尼克”作为精准武器的全球定位系统，为我们今天所知的GPS铺平了道路。
First artificial satellite launched fr Earth. Sputnik I is orbited by the Soviet Union, arking the dawn of Earth's Space Age.
第一颗人造卫星，苏联制的“史普尼克一号”从地球上发射开始轨道运行，为地球的太空世纪开启了曙光。
Artificial neural networks are proposed in this paper, which are used to detect and diagnose faults of hardware for the satellite attitude measurement system. The result is satisfied.
针对卫星姿态测量系统的硬件故障，应用人工神经网络进行故障检测与诊断，得到了较为满意的结果。
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 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。
The stability of artificial lunar satellites and relevant synchronous satellite are also discussed.
还讨论了人造月球卫星以及相应的同步卫星的运动稳定性。
The shape and perigee of artificial satellite orbits shall continually variate due to caused by the atmospherical drag and the earth gravity.
人造地球卫星的轨道由于大气阻力和地球引力场等因素的摄动，其形状和近地点位置将不断改变。
He also played a significant role in developing the country's first artificial earth satellite.
他同时在研制中国第一颗人造地球卫星过程中身兼重任。
By analysing the process of a artificial enhancement precipitation, we also discuss satellite retrieve product's operation in artificial enhancement precipitation.
本文还通过对一次人工增雨作业过程的分析，初步讨论了卫星反演产品在人工增雨作业指挥中的指导作用。
In this paper an example is given for the application of the routine overlay method to the retrofit program of the. orbit of an artificial earth satellite.
本文介绍程序覆盖法在人造卫星轨道改进程序中应用的一个例子。
Satellite images recently released by the Chinese media showed that Vietnam attempted to construct two artificial islands in part of the South China Sea that is claimed by China.
中国媒体近日公布卫星图像显示，越南欲在中国声索主权的南海海域建设两个人工岛礁。
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。
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。
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。
Calls with the current time and date automatically change based on satellite time, convenient and quick, not to be artificial Settings.
来电附带当前的时间和日期，根据卫星时间自动变更，方便快捷，不须人工设置。
If the astrometry is to be done from an artificial satellite, then the result could be obtained more quickly and accurately. This is the special advantage of the Hipparcos method of astrometry fro...
从人造卫星上进行这种天体测量，那就又快又精确，这就是依巴谷空间测量卫星的特点。
If the astrometry is to be done from an artificial satellite, then the result could be obtained more quickly and accurately. This is the special advantage of the Hipparcos method of astrometry fro...
从人造卫星上进行这种天体测量，那就又快又精确，这就是依巴谷空间测量卫星的特点。
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