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 GB/T 16857.2-2017  
Geometrical product specifications (GPS)—Acceptance and reverification tests for coordinate measuring machines (CMM)—Part 2: CMMs used for measuring linear dimensions

产品几何技术规范(GPS) 坐标测量机的验收检测和复检检测 第2部分: 用于测量线性尺寸的坐标测量机
 GB/T 7251.4-2017  
Low-voltage switchgear and controlgear assemblies—Part 4: Particular requirements for assemblies for construction sites (ACS)

低压成套开关设备和控制设备 第4部分:对建筑工地用成套设备(ACS)的特殊要求
 GB/T 19443-2017  
Insulators for overhead lines with a nominal voltage above 1500V—Ceramic or glass insulator units for d.c. systems—Definitions,test methods and acceptance criteria

标称电压高于1500V的架空线路用绝缘子 直流系统用瓷或玻璃绝缘子串元件 定义、试验方法及接收准则

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