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。

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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.

本发明提供了一种治理冶金锰渣灰的方法，并生产出可以矫治土壤缺素、节肥增产、提高品质的锰硅肥。

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