谐波滤波器 meaning in Chinese

hamonic filter
harmonic filter

Probe on technology reform of harmonic filter for coal mine power network
煤矿电网谐波滤波器技术改造探讨
It is no use inputting the tune wave filter and the compensate instruments with the power factor because the little pollution of the tune wave and the lower power factor
对电网谐波污染小、输人功率因数高。不必采用输人谐波滤波器和功率因数补偿装置。