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di·la·tan·cy AHD[dī-lātʹn-sē, dĭ-] D.J.[daɪˈleɪtnsiː, dɪ-]K.K.[daɪˈletņsi, dɪ-]n.（名词）pl. di.la.tan.cies 【复数】- The increase in volume of a granular substance when its shape is changed, because of greater distance between its component particles.膨胀性：由于粒子成分之间的距离较大，颗粒物质当形状发生变化时所具有的体积增加的性能
- The phenomenon whereby a viscous substance solidifies under pressure.膨胀凝固性：一种粘性物质在压力下变成凝固的现象
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