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美航宇局将使用一九七六年五月发射的激光测地卫星(即地球动力学卫星——编者)和在美国及布置在全球的严重地震活动地区的有激光发射器的地面站网,以研
NASA will use laser geodetic satellites (ie, geodynamic satellites - editors) launched in May 1976 and ground station networks with laser transmitters in the United States and in major seismic areas around the world To study