滞后弹簧摩擦模型
hysteretic spring friction model
1套排出阀弹簧
1-set Discharge Valve Springs
1套吸入阀弹簧
1-set Suction Valve Springs
3/4椭圆弹簧
three-quarter elliptic spring
38Si7调质弹簧钢
Si7 hardened and tempered spring steel
60Si2CrVA圆柱弹簧
60Si2CrVA cylindrical spring
60Si2Mn板弹簧钢
60Si2Mn vechicle plate spring
60Si2Mn弹簧扁钢
60Si2Mn spring flat-rolled steel
Si2Mn spring flat steel