找一根一米多长的尼龙绳,在绳的前端隔几厘米打一个结,有4—5个结即可。绳末端固定在水管或水龙头上,将打结的前端放入下水管内,然后将大量的水注入水池内,让绳结在水压作用下徐徐进入并超过S形弯道。然后拉动绳子,此时的绳结就会触动堵塞物,并使之在水压的作用 Find a one meter long nylon rope, rope in front of a few centimeters to play a knot, 4-5 knot can be. The end of the rope is fixed on the water pipe or the faucet, the knotted front end is put into the water pipe, and a large amount of water is poured into the water pool so that the rope knot enters under the water pressure and surpasses the S-shaped curve. Then pull the rope, the knot at this time will touch the blockage, and make it in the role of water pressure