GB/T 39388-2020照度计和亮度计的性能表征方法标准
英文:Characterization of the performance of illuminance meters and luminance meters GB/T 39388-2020介绍: 国家标准《照度计和亮度计的性能表征方法...
英文:Characterization of the performance of illuminance meters and luminance meters GB/T 39388-2020介绍: 国家标准《照度计和亮度计的性能表征方法...