zhè / zhǒng / kuàng / shí / xū / yào / jīng / guò / fú / xuǎn / cái / néng / tí / gāo / jīng / kuàng / pǐn / wèi

这种矿石需要经过浮选才能提高精矿品位。

This ore must undergo flotation to improve the grade of the concentrate.