墙楼梯斜梁
In this paper, the normal contact force between the borehole wall and buckled pipe string, bending moment and stress are analyzed as well.
本文还对管柱屈曲后与井壁之间的法向接触力、弯矩及应力等进行了分析。
Results The shape of cysts in 19 cases were elliptic, long marsupial shape in 3 cases, irregular in 1 case, string shap in 2 cases. The edge of cysts is clear and the wall of cysts is very thin.
所有病例均行MR检查。结果囊肿位于骶管内,呈卵圆形19例,长条状囊袋形3例,不规则形1例,串珠形2例。
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