NF E58-004-1995 Earth-moving machinery Units for dimensions performance and capacities and their measurement accuracies 《土方机械 尺寸、性能、能力及其测量精确度的单位》.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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