Trivalent chromium and hexavalent chromium are two main states of the chromium in foods.
三价铬及六价铬是食品中微量元素铬的两种主要存在价态。
Galvanized to trivalent chromium and hexavalent chromium passivation passivation process.
镀锌为三价铬钝化及六价铬钝化工艺。
Galvanized to trivalent chromium and hexavalent chromium passivation passivation process.
镀锌为三价铬钝化及六价铬钝化工艺。
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