表面碎裂 meaning in English

case crushing

Tests for geometrical properties of aggregates - determination of percentage of crushed and broken surfaces in coarse aggregate particles
集料的几何特性试验.粗集料颗粒表面碎裂百分率测定
Tests for geometrical properties of aggregates . part 5 : determination of percentage of crushed and broken surfaces in coarse aggregate particles
集料几何特性试验.第5部分:粗集料颗粒表面碎裂百分比测定
Tests for geometrical properties of aggregates - part 5 : determination of percentage of crushed and broken surfaces in coarse aggregate particles
集料的几何特性试验.第5部分:粗集料颗粒表面碎裂百分率测定