短語詞組短語vacuum relief valve control 真空釋放閥控制;真空溢流閥控制;真空閥控制relief valve control poppet 安全閥控制提動頭inlet relief valve control 輸油安全閥控制proportional pressure -relief valve control 比例減壓閥控制relief control valve 泄壓控制閥relief pressure control valve 釋放壓力控制閥Proportional Relief and Control Valve 比例溢流閥和控制閥transmission pressure relief control valve 變速箱泄壓控制閥negative control relief valve 反曏操縱安全閥 返回 relief valve control