有文章为了证实“如果物体下表面与液体不接触，不受到液体向上的压力，就不会受到浮力的作用．”即为了演示浮力产生于液体压力差设计了一个实验： 将一个剪去底的塑料高检瓶倒置，用一个开有细槽的软木塞把瓶口轻轻堵上．向瓶内注入水如图１所示，虽然软木塞排开一定量水，但 Articles in order to prove “if the lower surface of the object is not in contact with the liquid and is not subject to upward pressure on the liquid, it will not be subject to buoyancy.” That is to demonstrate that the buoyancy produced by the liquid pressure difference is an experiment: a cut off the bottom 3. The plastic high test bottle is inverted, and the bottle mouth is gently plugged with a cork with a thin slot. Inject water into the bottle as shown in Figure 1, although the cork drains a certain amount of water, but