水是液体,可以做成塞子吗?仔细观察,在我们的周围,许多设备都巧妙地把水当做软塞子使用。在下面的图中,水都起到了塞子的作用。左图是洗手池,它的下水管道是用一个正U形管和一个倒U形管连接成的弯管。这是为防止下水道内的异味顺管道逸到空气中而设计的。 Water is a liquid, can it be made into a stopper? A closer look at the equipment around us is that many devices cleverly use water as a soft stopper. In the picture below, the water plays a role as a stopper. The left hand side is a sink, and its sewer pipe is a bent pipe that is connected by a positive U-shaped pipe and an inverted U-shaped pipe. This is designed to prevent scent from falling into the air.