In upper of the medium, the element accumulation of n, Ca, Mg, cu, Fe and Mn may be harmful to the plant.
试验显示营养液中的氮和钙、镁、铜、铁、锰等元素在基质上部富集，可产生肥料盐害。
Objective To study plasma and intra-erythrocyte Zn, Cu, Ca and Mg in infants with malnutrition.
目的为了解营养不良婴幼儿红细胞内锌、铜、钙、镁的变化及其意义。
Elements of ca, Fe, Zn, Mg, Cu play an important role in organism's metabolism and physical performance enhancement.
钙、铁、锌、镁、铜元素在机体代谢和运动能力提高中起着非常重要的作用。
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