windup position正面投球法;反面投球法;棒球投手
windup key发条钥匙
windup reel缠绕卷筒
WindUp Chair发条椅子
integral windup[自] 积分饱卷
full windup大摆臂动作
circular windup曲线摆动
Clockwork Windup被动
ADJ（形容词） A windup device is a mechanical device with a handle or key that you turn several times before you use it in order to make it work. 装有发条的 [ADJ n]
...an old-fashioned windup gramophone.
...一部旧式发条留声机。