常見例句and a hydraulus (water organ), in which the weight of water forced air through the organ pipes. 另一項(xiàng)著名的發(fā)明是一種水風(fēng)琴，靠水的重量代替下落的鉛砝碼，以推動(dòng)空氣通過風(fēng)琴琯。 返回 hydraulus