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。

youdao

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。

youdao

Application of Zn, fe fertilizers increased significantly zinc concentration and uptake by 11.9%, 19.2% respectively, but there was no obvious influences on iron concentration and uptake.

施用锌铁肥显著增加了小麦的锌含量和携出量，增幅分别11.9%和19.2%，但对铁的含量和携出量影响不显著。

youdao