It is meaningful to understand equilibrium between lead and other trace elements.
正确认识铅和其他微量元素间的平衡具有重要意义。
The crops straw stalks contain lots of nitrogen, phosphorus, potassium and other trace elements.
农作物秸秆中含有大量氮、磷、钾及其他微量元素。
Also contain: iron, barium, manganese, zinc, titanium, strontium, copper and other trace elements [5].
还含:铁、钡、锰、锌、钛、锶、铜等微量元素[5]。
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