CSN ISO 570-1994 Textile machinery and accessories Heald carrying rods for healds with closed O - shaped end loops《纺织品机械与附件 闭口“O”型综耳的综丝用穿综杆》.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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