n. triad
misc. trivalent element
研究人员发现，铬元素的氧化物由六价铬转变为三价铬，这与画作中的铬黄色日趋变暗有关。
The researchers found that a change in the oxidation state of the element chromium (from chromium 6 to chromium 3) was linked to the darkening of chrome yellow paint.
铬是人体必需的微量元素，三价铬为葡萄耐量因子gtf的主要成分。
Chromium is one of the essential trace elements in human body, Cr3 + is the basis of glucose tolerance factor (GTF).
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。
Trivalent chromium and hexavalent chromium are two main states of the chromium in foods.
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