通过单击加粗按钮来加粗选中的字体。
对某铋锌铁多金属矿的铋粗选工艺进行了系统的参数优化试验研究。
The test research to optimize processing parameters had been carried out systemically for Bi roughing of certain multi-metal ore containing Bi, Zn and Fe.
该设备使用面广，既可用于高浓度纸浆的粗选净化。也可用于纸机前，对低浓度纸浆进行精选净化。
The device using a wide, both for the high consistency pulp roughing purification. Before the machine can also be used for low consistency pulp cull purification.
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