YD/T 757-1995.1范围YD/T 757规定了微波铁塔及各类通信铁塔(角钢塔)的技术条件。YD/T 757适用于自立式角钢微波铁塔及各类通信铁塔的设计...

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YD/T 841-1996.1范围YD/T 841规定了地下通信管道用硬质聚氯乙烯及高、低密度聚乙烯塑料管材(以下简称管材)的产品分类及型号、形状和结构尺寸、技...

行业标准2023.07.31

YD/T 1037-2000.900/1800MHz TDMA Digital Cellular Mobile Telecommunication Networ...

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YD/T 1058-2000.High Frequency Switching Power Supply System for Telecommunicatio...

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YD/T 5118-2005.Specifications of Engineering Design for ATM Network.1总则1.0.1为了使A...

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YD/T 5119-2005.Design Specifications of MSTP Based on SDH Engineering for Local...

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YD/T 5122-2005.Specifications of Engineering Acceptance for Long-Haul Optical Wa...

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YD/T 1015-1999.Technical requirement for Q interface adapter used in transmissio...

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YD/T 1024-1999.The Protective Component for Fixed Optical Fiber Splice.1范围YD/T 1...

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YD/T 1028-1999.Technical Specification of 800MHz CDMA Digital Mobile Communicati...

行业标准2023.07.31