Other items are just wandered the pass on the fractional line.
其他的项目都只是在及格的分数线上徘徊罢了。
Through carrying out fractional filtration, depositing and using the waste heat of washing blast furnace slag water, the heating and district heating line system is set up.
将高炉冲渣水进行分级过滤、沉淀，利用冲渣水的余热，建立了高炉冲渣水余热供暖供热系统。
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