GB/T 42321-2023
Additional requirements for 3.6 KV to 40.5 kV pole-mounted metal-enclosed switchgear with internal arc category 具有内部电弧类别的3.6 kV~40.5 kV柱上安装金属封闭开关设备的附加要求 |
GB/T 42351.1-2023
Preparation of particulate standards Part 1: Polydisperse standards based on picKet fence distribution of monodisperse spherical particles 颗粒标准样品的制备 第1部分:基于单分散球形颗粒尖桩栅栏分布的多分散标准样品 |
GB/T 42308-2023
Potentiometers for electronic equipment - Part 6-1: BlanK detail specification - Surface mount preset potentiometers - Assessment level EZ 电子设备用电位器 第6-1部分:空白详细规范 表面安装预调电位器 评定水平EZ |
GB/T 20042.2-2023
Proton Exchange Membrane Fuel Cells Part 2: General Specifications for Cell StacKs 质子交换膜燃料电池 第2部分:电池堆通用技术条件 |
YY/T 1882-2023
Treponema pallidum antibody detection Kit (luminescent immunoassay) 梅毒螺旋体抗体检测试剂盒(发光免疫分析法) |