上端开口、下部相连通的容器叫连通器．连通器的原理是静止在连通器内的同种液体，各部分直接与大气接触的液面总是相平的．常见的连通器有很多，它们在日常生活、生产中发挥着重要的作用．喷水壶、茶壶的壶身。壶嘴一样高，是为了盛水时水不从壶嘴流出．过路涵洞两边沟道可以 The container with the upper end open and the lower one connected is called a communicating device. The principle of the communicator is the same kind of liquid that stays in the communicating vessel, and the liquid level of each part directly in contact with the atmosphere is always flat. There are many common connected devices, which play an important role in daily life and production. Watering pot, kettle body. The spout is as high as the water does not flow out of the spout when it is filled. Crossing culverts on both sides can be