coal slack
常見例句
- Coal slack is one of industrial waste residues.
煤矸石是我國排放量最大的工業(yè)廢渣之一。 - So the study on coal slack should be enhanced in order to make it become a sort of resources.
加強對煤矸石利用的研究，以將其資源化。 - For silica fume and coal slack, the error value of measure by acid dissolution method is big and the reaction activity is lower.
煤矸石和Ⅱ級磨細(xì)粉煤灰的火山灰活性比Ⅰ級分選粉煤灰較大； 酸溶法測定的煤矸石或矽灰的火山灰活性誤差較大，活性偏低； - Natural gas, which emits 45% less carbon dioxide than coal, would take up most of the slack.
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