Azo dyes methyl orange, acidic eriochrome blue and chrome black t degraded by electro-generated ferrate was reported.

以电化学法制备的高铁酸盐对甲基橙、酸性铬蓝、铬黑t等偶氮类染料进行降解脱色。

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Taking chrome black t (t) as main material, a new prescription of trace hardness indicating agent has been screened out through orthogonal test.

以铬黑t (T)为主要原料，通过正交试验，筛选出微量硬度指示剂的新配方。

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Taking chrome black t (t) as main material, a new prescription of trace hardness indicating agent has been screened out through orthogonal test.

以铬黑t (T)为主要原料，通过正交试验，筛选出微量硬度指示剂的新配方。

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