scalar curvature

例句：

1. 1.The shape of the planet is determined by its scalar curvature.
   行星的形状由其标量曲率决定。
2. 2.The scalar curvature of a spacetime affects how it bends light.
   时空的标量曲率影响它如何弯曲光线。
3. 3.In relativity theory, the scalar curvature of spacetime is related to the speed of light.
   在相对论理论中，时空的标量曲率与光速有关。