我国是粉煤灰资源大国，低等级粉煤灰由于活性低，在利用上受到限制，造成很大的资源浪费。
Our country is in rich of fly ash, low grade fly ash received great limit because of its low activity, resulting in great waste of resources.
我国是粉煤灰资源大国，低等级粉煤灰由于活性低，在利用上受到限制，造成很大的资源浪费。
Our country is in rich of fly ash, low grade fly ash received great limit because of its low activity, resulting in great waste of resources.
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