To describe the anisotropy of microdamage of the crust block, we use the damage tensor that is expressed in the fissure density.

为描块体微损伤各向异性，引入裂纹度表示损伤张量形式。

Microdamage accumulation will finally lead to bone fatigue fracture.

显微损伤最终会导致骨疲劳骨折。