theoretical stress concentration factor

例句：

1. 1.The theoretical stress concentration factor is an important factor in the design of structures.
   理论应力集中系数是结构设计中的一个重要因素。
2. 2.The engineer calculated the theoretical stress concentration factor for the beam to ensure its strength.
   工程师计算了梁的理论应力集中系数，以确保其强度。
3. 3. The theoretical stress concentration factor was used to predict the failure of the structure under extreme loads.
   理论应力集中系数被用来预测结构在极端载荷下失败的情况。