astronomical > acquisition Satellites



Contents ·No. 1 ·Containing Phrases ·More results... No. 1 　　用于测定地面点坐标、地球形状和地球引力场参数，也可作为地面观测设备的观测目标或定位基准。它可以为洲际导弹发射测定准确的目标位置。60年代初，人们观测人造卫星运动，推算出地球扁率，利用卫星测定观测站坐标，计算地球重力场，取得较大成果，从此，美、苏、法等国相继发射了测地卫星。 Containing Phrases Science acquisition Satellites circumlunar acquisition Satellites environmental survey satellite acquisition Satellites spot nuclear detection Satellites ionosphere acquisition Satellites space physics detection satellite Cynthia circumlunar acquisition Satellites E first day of the month Continent acquisition Satellites acquisition Satellites Expedition on the 4th launcher Transmit Liangke Experiment 6th day of the month air Environmental survey satellite triumph commemorative envelope