The result of study shows that steel slag has low activity, therefore its activity must be excited if using it to make block.
研究结果表明：钢渣的活性较低，若用其生产砌块，必须对其活性进行激发。
The result of study shows that steel slag has low activity, therefore its activity must be excited if using it to make block.
研究结果表明：钢渣的活性较低，若用其生产砌块，必须对其活性进行激发。
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