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YS T 1023-2015 Molybdenum-vanadium-aluminium master alloy《钼钒铝中间合金》.pdf 6

YS T 1023-2015 Molybdenum-vanadium-aluminium master alloy《钼钒铝中间合金》.pdfYS T 1023-2015 Molybdenum-vanadium-aluminium master alloy《钼钒铝中间合金》.pdf

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YS T 1022-2015 Ammonium metavanadate《偏钒酸铵》.pdf 7

YS T 1022-2015 Ammonium metavanadate《偏钒酸铵》.pdfYS T 1022-2015 Ammonium metavanadate《偏钒酸铵》.pdf

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YS T 1021-2015 Potassium metavanadate《偏钒酸钾》.pdf 6

YS T 1021-2015 Potassium metavanadate《偏钒酸钾》.pdfYS T 1021-2015 Potassium metavanadate《偏钒酸钾》.pdf

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YS T 1019-2015 Rubidium chloride《氯化铷》.pdf 6

YS T 1019-2015 Rubidium chloride《氯化铷》.pdfYS T 1019-2015 Rubidium chloride《氯化铷》.pdf

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YD T 2090-2010 Test method for internet content control based on LAN gateway 《局域网网关型互联网内容过滤产品测试方法》.pdf 72

YD T 2090-2010 Test method for internet content control based on LAN gateway 《局域网网关型互联网内容过滤产品测试方法》.pdfYD T 2090-2010 Test method for internet content control based on LAN gateway 《局域网网关型互联网内容过滤产品测试方法》.pdf

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YD T 1817-2017 DC remote feeding power system for telecommunication equipment《通信设备用直流远供电源系统》.pdf 32

YD T 1817-2017 DC remote feeding power system for telecommunication equipment《通信设备用直流远供电源系统》.pdfYD T 1817-2017 DC remote feeding power system for telecommunication equipment《通信设备用直流远供电源系统》.pdf

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YD T 1762 3-2011 《TD-SCDMA WCDMA 数字蜂窝移动通信网 通用集成电路卡（UICC）与终端间Cu接口技术要求 第3部分：终端通用用户识别模块应用工具箱（USAT）特性》.pdf 118

YD T 1762 3-2011 《TD-SCDMA WCDMA 数字蜂窝移动通信网 通用集成电路卡（UICC）与终端间Cu接口技术要求 第3部分：终端通用用户识别模块应用工具箱（USAT）特性》.pdfYD T 1762 3-2011 《TD-SCDMA WCDMA 数字蜂窝移动通信网 通用集成电路卡（UICC）与终端间Cu接口技术要求 第3部分：终端通用用户识别模块应用工具箱（USAT）特性》.pdf

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YD 514-1998 Technical requirements and test methods for interface between non-voice subscriber terminal and public telephone network《非话用户终端设备与公用电话网接口技术要求和测试方法》.pdf 13

YD 514-1998 Technical requirements and test methods for interface between non-voice subscriber terminal and public telephone network《非话用户终端设备与公用电话网接口技术要求和测试方法》.pdfYD 514-1998 Technical requirements and test methods for interface between non-voice subscriber terminal and public telephone network《非话用户终端设备与公用电话网接口技术要求和测试方法》.pdf

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YD 334-1987 Urban local telecommunication cable connectors《市内通信电缆接线子》.pdf 21

YD 334-1987 Urban local telecommunication cable connectors《市内通信电缆接线子》.pdfYD 334-1987 Urban local telecommunication cable connectors《市内通信电缆接线子》.pdf

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YB T 4371-2014 Seamless steel tubes for perforating guns for oil and gas wells《油气井射孔枪用无缝钢管》.pdf 8

YB T 4371-2014 Seamless steel tubes for perforating guns for oil and gas wells《油气井射孔枪用无缝钢管》.pdfYB T 4371-2014 Seamless steel tubes for perforating guns for oil and gas wells《油气井射孔枪用无缝钢管》.pdf

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