antecedent magnetic concentration是什么意思

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用法例句

In this paper,the advancement on the mineral processing technology of magnetite and hematite in our country,especially on the development of magnetic separators and the improvement of reverse flotation techniques,were mainly introduced.

主要介绍了国内磁铁矿及赤铁矿选矿技术的进展,尤其是磁选设备和反浮选工艺的研究情况。

Magnetic separator situation, development and application on domestic and foreign are brief introduced.

本文简略介绍了国内外磁选设备现状、发展和应用情况，举出了磁选设备存在的问题与改进实例，得出今后弱磁、强磁磁选设备永磁化是一个发展方向及超导磁选机可望有新型高温超导材料出现而使其降低成本的结论。