A disk turning on a diametrical axis inside a pipe, used as a throttle valve or damper.
节流阀，减压阀：管道内沿直径中心轴线上的圆片状旋钮，用作节流阀门或阀门。
Not new, but the subject of much controversy in Germany, the damper takes the form of a free-moving mass inside a vertical spring.
虽然不算是新闻，但在德国站比赛中引起较多争议的是减震器的使用，其结构是在垂直的弹簧中间加入减震块。
After several years' operation, hydraulic medium and sealing elements inside the damper also have different degrees of aging, and abrasion is also caused among relative sliding parts;
阻尼器经过几年的运行以后，阻尼器内部的液压介质、密封件也会发生不同程度的老化，相对滑动的零件之间也会产生不同程度的磨损；
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