气体和固体的区别在于气体的可压缩性比固体大。
Gases differ from solids in that the former has greater compressibility than the latter.
但由于气体的可压缩性明显大于液体，因而气体的状态方程与液体完全不同。
But due to the compressibility of gas significantly higher than fluid, the state equation of gas is different from fluid.
空气悬架系统以空气弹簧为弹性元件，利用气体的可压缩性实现其弹性作用。
The elastic element of air suspension system is air spring. Air spring utilize the compressibility of air to realize its elasticity.
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