你见过虹吸现象吗?如有机会,你可仔观察汽车驾驶员将软胶管插入高处油箱里,怎样使汽油沿弯曲的软胶管引流到低处油桶中的情况,这样,你见到的就是虹图2图1吸现象。虹吸现象就是利用曲管将液体经过高过液面地方引向低的现象。怎样才能发生虹吸现象呢?做了下面的实验,同学们就会找 Have you seen the siphon phenomenon? If you have the opportunity, you can observe the situation where the driver of the vehicle inserts the flexible hose into the high oil tank and how to make the gasoline flow along the bent flexible hose into the low oil tank. The one is the suction phenomenon of the Hong Figure 2 Figure 1. The phenomenon of siphoning is the use of curved tubes to direct liquids through high liquid surface to low levels. How can the siphon phenomenon occur? After doing the following experiment, the students will find