短語(yǔ)詞組短語(yǔ)calcination coal mine refuse 煆燒煤矸石coal -refuse fragment dimension 煤矸塊度firebrick from coal refuse 矸石甎characteristics of coal refuse 煤矸石特性acid coal refuse 酸性煤矸石high sulfur coal refuse 高硫煤矸石coal refuse foundation 矸石地基 返回 coal refuse