crust blocks meaning in English

凝渣, 渣(壳)块

To describe the anisotropy of microdamage of the crust block , we use the damage tensor that is expressed in the fissure density
为描述地壳块体微损伤的各向异性，引入裂纹密度表示的损伤张量形式。
The macroscopic damage status of the earth crust block , which is caused by earthquake fracture , is described with several concepts - the damage degree , the damage rate and the strain rate
对地壳块体由地震破裂引起的宏观损伤状态，通过引入损伤度、损伤率? 、应变率?来刻画。