principal shear strain

例句：

1. 1. The structure's design is based on the principle of maximum strength.
   该结构的设计基于最大强度原理。
2. 2. The material used in this project has a principal shear strain of 0.2%.
   该项目中使用的材料具有0.2%的主要剪应力。
3. 3. During the construction process, the principal shear strain should be monitored to ensure safety.
   在施工过程中，应监测主要剪应力以确保安全。