unit tensile stress

例句：

1. 1.The design of the bridge is based onthe unit tensile stress theory.
   桥梁的设计基于单位抗拉强度理论。
2. 2. Thematerial's unit tensile stressis very high, which makes it difficultto use.
   这种材料的单位抗拉强度非常高，使用起来非常困难。
3. 3. The engineercalculated the unit tensile stress forthe beam using a computer program.
   工程师使用计算机程序计算了梁的单位抗拉应力。