Fly ash was a sort of industrial solid castoff which could be utilized again.
粉煤灰是一种可再资源化的工业固体废弃物。
The solid castoff — fly ash discharged by fire power plants in our country has over a hundred million tons, it piles up on ground and pollutes environment.
而我国火力发电厂每年排放的工业固体废料——粉煤灰上亿吨，堆放在地表，严重污染环境。
The solid castoff — fly ash discharged by fire power plants in our country has over a hundred million tons, it piles up on ground and pollutes environment.
而我国火力发电厂每年排放的工业固体废料——粉煤灰上亿吨，堆放在地表，严重污染环境。
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