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Now, faucets in almost public places are infrared sensor. But they are often find easily broken and not easy to maintenance in time, and , And most people have a habit that turn the tap then wash hands directly . Assuming people wash their hands by a certain amount of water, however, the moment water flows will direct loss. Taps can be a good solution to this problem. And the amount of water very large in the public places, so, slight changes are a great improvement. Let's change habits to save water.
Ningbo Institute of Technology,Zhejiang University