超高频功率信号发生器
ultra high frequency power signal generator
高功率超高亮度LED
Hi-power super-brightness LED
高频测量仪器
high-frequency measuring instrument
频率测量仪
frequency measuring instrument
频率测量仪器
frequency measuring instrument
辐射功率测量仪
radiant power measuring instrument
无功功率测量
reactive power measurement
measurement of reactive power
无功功率测量方法探讨
Discussion on Reactive Power Measurement