基本解释n.膨胀性同根派生 英汉例句用作名词 (n.)The paper rearches into the compactibility and the dilatability of the crushed material of the clayrock in the northwest area of China.以西北某粘土岩的粉碎材料为研究对象，对粉碎土料进行了压实性和膨胀性的研究。