polytropic index of compression

例句：

1. 1.The polytropic index of compression is a measure of the ability of a material to resist deformation under pressure.
   多孔性指数压缩是衡量材料在压力下抵抗变形能力的一个指标。
2. 2. The polytropic index of compression is an important factor in determining the strength and durability of materials.
   多孔性指数压缩是决定材料强度和耐久性的一个重要因素。
3. 3. The polytropic index of compression can be used to predict the behavior of materials under different conditions.
   多孔性指数压缩可以用来预测材料在不同条件下的行为。