GB/T 39824-2021.Determination of relative strength of dyes in solution.1范围GB/T 39824规定了溶液中染料相对强度的测定方法。GB/T 39824适用于部分类别的染料品...
GB/T 8110-2020.Wire electrodes and weld deposits for gas shielded metal arc welding of non alloy and fine grain steels.1范围GB/T 8110规定了熔化极气体保护电弧焊用非合...
GB/T 39816-2021.Master alloy electrode for titanium and titanium alloy casting.1范围GB/T 39816规定了钛及钛合金铸造母合金电极的技术要求、试验方法、检验规...
GB/T 39841-2021.Ultrasonic gas meters.1范围GB/T 39841规定了超声波燃气表(以下简称燃气表)的工作条件、技术要求、试验方法、检验规则、包装、运输...
GB/T 39750-2021.Technology requirements of DC arc-fault circuit protection for photovoltaic power system.1范围GB/T 39750规定了光伏发电系统直流电弧的基本规定、保护...
GB/T 13539.5-2020.Low-voltage fuses-Part 5: Guidance for the application of low-voltage fuses.1范围GB/T 13539的本部分用于指导低压熔断器的应用,标准中表述了限流...
GB/T 18663.3-2020.Mechanical structures for electronic equipment-Tests for metric and inch system-Part 3: Electromagnetic shielding performance tests for cabinets and subracks.1范围...
GB/T 39938-2021.Electric room heating一Underfloor heating-Performance characteristics-Definitions，method of testing, sizing and formula symbols.1范围GB/T 39938规定了地板下电...
GB/T 11022-2020.Common specifications for high-voltage alternating-current switchgear and controlgear standards.1范围GB/T 11022规定了高压交流开关设备和控制设备的术...
GB/T 39934-2021.Determination of volatile organic compounds from furniture products-Gas chromatography-mass spectrometry.1范围GB/T 39934规定了采用气相色谱质谱法进行家...
