CNS 7663-1987 Method of Test for Low Frequency (Below 3 MHz) Electrical Connectors (TP - 24 Maintenance Aging Test)《频率3MHZ以下电连接器检验法（维护老化试验TP–24）》.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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