To counter the harm of harmonic on power network, which is from rectifying unit with large power and other electron element, the common method of harness were summarized.
针对大功率整流装置及其他电子元件所产生的谐波对电网的危害，总结出治理谐波的常用方法。
2
This invention provides a method to treat metallurgical manganese slag ash and to produce manganese silicon fertilizer for rectifying the lack element in soil saving fertilizer and increasing yield.