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YD/T 2329.7-2011 分组通信数据网(PTDN)体系架构第7部分:网络互通

YD/T 2329.7-2011.The technical architecture for packet telecommunication data ne...

YD/T 2329.6-2011.The technical architecture for packet telecommunication data ne...

YD/T 2329.4-2011.The technical architecture for packet telecommunication data ne...

YY 0719.2-2009.Ophthalmic optics- Contact lens care products-Part 2 :Fundamental...

YD/T 2329.5-2011.The technical architecture for packet telecommunication data ne...

YY 0290.2-2009.Ophthalmic implants- Intraocular lenses-Part 2:Optical properties...

YY 0719.1-2009.Ophthalmic optics-Contact lens care products-Part 1 : V ocabulary...

TB/T 3458-2016.Front hatch mechanism of EMU/DMU.1范围TB/T 3458规定了动车组前端开闭机构(以下简称开闭机...

TB/T 3460-2016.Overflow valve for railway passenger car and EMU/DMU.1范围TB/T 3460...

TB/T 3461-2016.Forged coupler yoke of railway freight car.1范围TB/T 3461规定了铁道货车锻造钩...

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