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随着高速公路的发展和汽车性能的提高,汽车的行驶速度越来越快。特别是由于车辆拥有量的迅速增加,交通越来越拥挤,使得事故更为频繁。为了加强安全性,目前汽车最常用的安全设备有安全带和安全气囊。发生交通事故时,传统的安全带能对人起到缓冲的作用,防止出现二次伤害。安全带里面有一个卡轮,在遭遇车祸的情形下,如果快速拉动安全带,里面的卡子会由于安全带滚轮的快速转动而被离心力带出,迅速将安全带锁死,把座位上的人员固定在
With the development of the highway and the improvement of automobile performance, the speed of the car is getting faster and faster. In particular, due to the rapid increase in vehicle ownership, traffic is getting more crowded, making accidents more frequent. In order to enhance safety, the most commonly used safety devices for cars are seat belts and airbags. In a traffic accident, the traditional seat belt can play a buffer role to prevent secondary damage. Belt inside a card wheel, in the case of a car accident, if you quickly pull the seat belt, the inside of the clip will be due to rapid rotation of the seat belt wheel was brought out by centrifugal force, the seat belt quickly locked, the seat of the staff fixed at