The thesis also studied that the effect casing strength of casing wear and corrosion, established casing residualintensity computational module after casing wear and corrosion.
论文研究了套管磨损、腐蚀对套管强度的影响，并建立了套管磨损后和套管腐蚀后的剩余强度计算模型。
2
In this dissertation, the stress intensity factors and the residual strength of panels with multiple site damage are studied in detail.
本文主要研究了含多部位损伤结构的应力强度因子和剩余强度。
3
Objective: Investigate recent efficacy and safety of treatment residual cervical cancer after radiotherapy and chemotherapy by high intensity focused ultrasound thermal coagulation technique (HIFU).