SIS SS-ISO 9595-1990 Information technology Open Systems Interconnection Common Management Information Service definition《信息技术 开放性系统互连 常见管理信息服务定义》.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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