DS ETS 300174-1993 Network Aspects (NA) Digital coding of component television signals for contribution quality applications in the range 35-45 Mbit s《网络特点（NA），35至45Mbit s范围内馈送质量应用.pdf

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ITU-R RAPPORT M 766-2 FRENCH-1990 Feasibility of frequency sharing between the GPS and other services《全球定位系统和其他服务之间的频率共享的可行性》.pdf

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