| 摘要 |
PURPOSE: A drainpipe is provided to improve the quality of living and to keep fit in pleasant environment by reducing noise caused by dropping water. CONSTITUTION: While the existing drainpipe is formed in straight to make noises by dropping rainwater or wastewater rapidly, the drainpipe is formed in zigzags, so that water crashes mutually in the drainpipe to drop slowly and moves as flowing water, not to drop vertically.
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