The first satellites placed in geostationary orbit were the synchronous communication(SYNCOM)satellites launched by NASA in 1963.
第
置在对地静止轨道的卫星是1963年美国航
暨太总署发射的同步传输卫星.
The first satellites placed in geostationary orbit were the synchronous communication(SYNCOM)satellites launched by NASA in 1963.
第置在对地静止轨道的卫星是1963年美国航暨太总署发射的同步传输卫星.
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