original extract ore是什么意思

用法例句

These experiments had be done to the properties of ores,adopt ed the technology of selective flota tion coarse concentrate regrinding and utilizeed BN -Y flotation reagents,obtained f avorable rejection resultt.

本试验在充分研究矿石特性的基础上,采用优先浮选粗精矿再磨的浮选工艺流程,利用BN-Y药剂,获得良好的选别效果。