单双弹簧铰链
single & double action spring hinge
黑漆单弹簧铰链
single action black japanned spring hinge
黑漆弹簧铰链
black japanned spring hinge
黑漆纱门弹簧铰链
black japanned screen door spring hinge
黑漆双弹簧铰链
double-action black japanned spring hinge
平头单向弹簧铰链
flat head single action spring hinge
弹簧弹性系数
the coefficient of spring elasticity
抗弯弹簧铰
bending-resistant spring hinge
平衡器弹簧铰接销
equalizer spring pivot pin
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