我们只要找来两只普通的玻璃酒瓶,再从输液管上剪下一根长度约是酒瓶高度3倍的塑料管,就可以进行下列实验了。物体沉浮的秘密把无盖的酒瓶放在水面上,一部分水从瓶口流进酒瓶后,酒瓶就静止在水面上。酒瓶静止后,一般会出现两种情况:一种是瓶口向上,竖立在水面上(如图1);另一种 As long as we find two ordinary glass bottles, and then cut from the infusion tube length is about three times the height of the bottle plastic tube, you can carry out the following experiments. The ups and downs of the object to the uncovered wine bottle on the water, part of the water flowing into the bottle from the bottle, the bottle is still on the water. Bottle stationary, there will usually be two situations: one is the bottle up, erected on the water (Figure 1); the other