The gas evolution test method has the advantage that the effective coal dust content in green sand can be determined rapidly and accurately.
发气量试验方法的优点是能够迅速和准确地确定 型砂中有效煤粉的具体含量。
The gas evolution test method has the advantage that the effective coal dust content in green sand can be determined rapidly and accurately.
发气量试验方法的优点是能够迅速和准确地确定 型砂中有效煤粉的具体含量。
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