Motor bicycles rmb 20 - 48 yuan per year 机器脚踏车：每辆每年20元48元
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Ex motor bicycle world champion 原两轮世界冠军digibike . com董事长
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A study of the frictional noise of motor bicycle disc brake and amelioration measures 车内低频噪声与悬架特性参数的定量关系
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The shrill frictional noise of motor bicycle brake is investigated and the excited - self vibration theory is validated in this paper 摘要通过对电动车刹车噪声机理的研究，验证了自激振动理论。
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The theory of using viscoelastic damping materials to reduce vibraton and niose is illuminated and the viewpoint that viscoelastic damping materials can reduce the brake noise of motor bicycle is advanced 同时阐明了粘弹阻尼减振降噪原理，提出增加摩擦材料的粘弹阻尼可消除电动车刹车噪声的观点。
