What is a hydraulic shock absorber

This "small energy, repeated impact," the impact of the number can not be controlled, simply put, is the impact of the excessive number of times this is the case, causing discomfort for passengers, reduced ride comfort internal parts for large machinery, will cause some damage so the edge of the spring, or in the middle of a spiral spring, a Shock Absorbers arrangement, to attenuate "small energy repeated impact," the number of shock absorbers, are generally divided into friction shock absorbers, and hydraulic shock.