基本解释碱集料同根派生 英汉例句As to the steel slag, the effect of reducing alkali aggregate reaction is better when alkali reactivity is low and the content of free calcium oxide and periclase is low.对于钢渣，当碱活性低，游离氧化钙和方镁石的含量低时，抑制碱集料反应的效果愈好。