cubic reciprocity law

例句：

1. 1. The cubic reciprocity law states that the volume of a cube is three times its side length cubed.
   立方反比定律表明，一个立方体的体积是其边长的三次方。
2. 2.This law has been confirmed by experiments conducted on various materials.
   这一定律已被各种材料进行的实验所证实。
3. 3. In engineering, this law is used to calculate the stress in structures under different loads.
   在工程中，这一定律被用来计算结构在不同荷载下的压力。