The effect of manganese oxides on the coated rolls was also analyzed.

介绍了超低碳素钢表面由于氧化锰的存在对涂层的影响.

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A natural brown earth containing ferric oxide and manganese oxides, used as pigment.

'棕'.''土含有''.'红色'.''氧化铁和氧化锰''.'的'. ''天然棕色泥土, 用作颜料.

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