It can be divided into four methods to prepare manganic manganous oxide from the raw stuff: electrolytic product of manganese, manganous salt, manganese oxide compound and manganese carbonate.
四氧化三锰的生产方法主要有四种：金属锰悬浮液法、锰盐法、高价锰氧化物法以及碳酸锰法。
It can be divided into four methods to prepare manganic manganous oxide from the raw stuff: electrolytic product of manganese, manganous salt, manganese oxide compound and manganese carbonate.
四氧化三锰的生产方法主要有四种：金属锰悬浮液法、锰盐法、高价锰氧化物法以及碳酸锰法。
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