Fly ash was a sort of industrial solid castoff which could be utilized again. 粉煤灰是一種可再資源化的工業(yè)固體廢棄物。
The utility model uses the castoff as material to reduce the production cost, and prepares new products. 本發(fā)明提供的制備方法，利用廢棄物為原料降低了生產(chǎn)成本，制備出全新的產(chǎn)品。
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