复位弹簧
/ɹɪtˈɜːn ˈspɹɪŋ/
n
English: return spring · 复位弹簧
English · return springEspañol · resorte de retornoFrançais · ressort de rappelDeutsch · Rückholfeder
释义：Spring returning the brake shoe to its initial position once the pressure on the brake pedal has ceased.