动能学

例句：

1. 1.The kinetic theory of heat explains the behavior of matter under constant temperature and pressure.
   热动理论解释了物质在恒定温度和压力下的行为。
2. 2. In kinetics, the speed of a moving object is measured by its velocity.
   在动力学中，物体的速度通过其速度来测量。
3. 3. The kinetic energy of an object is the potential energy it has when it is at rest.
   物体的动能是它在静止时所具有的势能。