Speciation of Zn, Mn, Fe, Ca, Mg in Ligusticum wallichii Franch was analyzed by atomic absorptionspectrometry.
利用原子吸收分光光度法对中药川芎中锌、锰、铁、钙、镁五种元素的形态进行了研究。
2
The drawing difficulty is settled by adopting small draught and multi-pass drawing process, reducing the thickness of Zn-Fe alloy and using artificial aging process actively.
通过采用小压缩率多道次拉拔工艺，减少锌-铁合金的厚度，积极采用人工时效工艺等解决了拉拔困难的问题。
3
Objective To study plasma and intra-erythrocyte Zn, Cu, Ca and Mg in infants with malnutrition.