They can be used for cushion and shock absorption.
它们可用于缓冲和减震。
奇趣工程百科
And the second layer of shock absorption will be from your car.
第二层减震将来自您的汽车。
英语百科
Shock absorber
A shock absorber (in reality, a shock "damper") is a mechanical or hydraulic device designed to absorb and damp shock impulses. It does this by converting the kinetic energy of the shock into another form of energy (typically heat) which is then dissipated. A shock absorber is a type of dashpot.