物理量的变化与稳定状态例说

事物的运动和变化，通常可以分为稳定状态和过渡过程，从一种稳定状态转换到新的稳定状态，是一种渐变的过程．有的渐变过程，对应物理量渐变渐小，物理状态逐渐趋近于新的稳态．

Physics Quantity's Change and Steady State

The movement and change of objects can usually be divided into steady state and transitional course. The conversion of objects from a kind of steady state to another new one, is a course of gradual change. During some courses of gradual change, corresponding physical quantity changes becomes small gradually. At the same time, the physical state gradually turns to a kind of new steady state.