Marginal compression fractures of acetabular posterior wall with posterior dislocation of hip 髋臼后壁边缘压缩骨折伴髋关节后脱位的诊治
2.
The hardness at the edge of the crater increases with the increase of velocity and approximates to the liner function of the velocity 侧壁边缘硬度随弹速的升高而增加，且近似符合线性规律。
