And you can find these compressibility factors in tables. If you want to know the compressibility factors for water, for steam, at a certain pressure and temperature, you go to a table and you find it.

各种气体的压缩系数,想知道水或者水蒸气,在某个温度和压强下的，压缩系数，查表就行了，这是实际气体状态方程的。

麻省理工公开课 - 热力学与动力学课程节选

The first one uses something called Z a compressibility factor, z.

下面我们就来看几个例子,第一种办法是引入压缩系数。

麻省理工公开课 - 热力学与动力学课程节选

Therefore, it'll compress by an unknown x, which is equal to mg divided by the force constant of the spring.

因此它的压缩量为 x,也就等于 mg 除以弹簧的弹性系数

耶鲁公开课 - 基础物理课程节选

Z Compressibility factor, z.

压缩系数。

麻省理工公开课 - 热力学与动力学课程节选