spring constant

例句：

1. 1.The force of gravity acting on an object is directly proportional to its mass and inversely proportional to the square of its distance from the gravitational center.
   作用在物体上的重力力与物体的质量成正比，与物体距离地球中心的距离的平方成反比。
2. 2. In a simple pendulum experiment, the period of oscillation is directly related to the length ofthe pendulum and inversely related to the square of its velocity.
   在一个简单的摆钟实验中，振荡周期直接与摆长相关，与摆速度的平方成反比。
3. 3. The spring constant of a rubber band is determined by its elasticity and the amount of stretch it can withstand without breaking.
   橡胶带的弹簧常数由其弹性和可以承受而不断裂的伸展量决定。