... trace mineral supplement 微量添加剂 Trace mineral content 微量元素含量 trace mineral feed 微量元素预混料 ; 量元素预混料 ...
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Research shows a decline in the trace mineral content of fruits and vegetables grown in the conventional method.
研究表明，传统的水果和蔬菜种植方法会使微量元素的含量下降。
And according to the mineral composition, chemical composition and trace element content, the evolution series of the magma is redefined.
并依据各单元的矿物成分、化学成分、微量元素含量的变化，重新厘定了岩浆的演化顺序。
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