NF R12-615-1988 Road vehicles Brake linings Effects of heat on dimensions and form of disc brake pads Test procedure 《道路车辆 制动磨擦片 闸瓦发热效应 试验方法》.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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