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trace element

一般 substância mineral em quantidades mínimas da dieta alimentar
农业 micronutriente
卫生保健, 食品工业, 化学 elemento vegetal; microelemento
环境 microelementos
经济 oligoelemento
trace elements ['treɪs'elɪmənts]
环境 oligoelementos
trace element Any of various chemical elements that occur in very small amounts in organisms and are essential for many physiological and biochemical processes
环境 microelementos