| 摘要 |
PROBLEM TO BE SOLVED: To effectively use water as natural resources and save city water charge by storing rain water in a water tank and sprinkling the water in a garden and a vegetable garden afterward. SOLUTION: The rainwater falling on a roof or the like is stored in the water tank through a trough. Then, before the water overflows, the water is drained to a drain gutter by a pipe connected to a drain outlet. COPYRIGHT: (C)2004,JPO
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