GB/T 17215.821-2017交流电测量设备验收检验第21部分:机电式有功电能表的特殊要求(0.5级、1级和2级)国家标准
英文:Electricity metering equipment (AC)—Acceptance inspection—Part 21: Particular requirements for electromechanical mete...
英文:Electricity metering equipment (AC)—Acceptance inspection—Part 21: Particular requirements for electromechanical mete...