初中《物理》第一册第107页图5-17所示的演示实验,若圆筒放置的高度不合适,则会出现上面开孔喷出的水反而比下孔喷的更远些(详见《天津教育》1983年第二期“怎样做好液体对侧壁压强的演示实验”一文),从而影响液体压强随深度变化规律的总结.为此,我对这一实验做了 In the demonstration experiment shown in Figure 5-17 on page 107 of the first book “Physics” in junior high schools, if the height of the cylinder is not suitable, the water sprayed from the upper opening will be sprayed farther than the lower hole (details). See “Tianjin Education,” second issue of 1983, “How to Do a Demonstration Experiment of Liquid Pressure on the Side Wall”, which will affect the summary of the law of liquid pressure change with depth. For this reason, I have done this experiment.