CNS 4020-1987 Permissible Deviations in Dimensions Without Tolerance Indication (Shearing of Metal Plates)《一般许可差（剪割）》.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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