特殊阳离子重氮化合物，含其作为直接染料的组合物，角蛋白纤维染色方法及其装置。
Cationic diazo compounds, compositions comprising them as direct dye, process for dyeing keratin fibers and device therefor.
膨润土，因其特殊的晶体结构而具有良好的吸附能力、阳离子交换能力和吸水膨胀能力。
Bentonite has good ability of adsorption, cation-exchange and swelling by drinking water, due to its special crystal structure.
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