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Hazard defusing structure of windwheel, has tapes or cloth portions that are mounted at leeward side of wing portions to flutter behind wing portions such that wing portions are optically enlarged, while rotating windwheel
Hazard defusing structure of windwheel, has tapes or cloth portions that are mounted at leeward side of wing portions to flutter behind wing portions such that wing portions are optically enlarged, while rotating windwheel
The hazard defusing structure has tapes or cloth portions that are mounted at a leeward side of the wing portions or rotor blades of a windwheel. The tapes or cloth portions are set to flutter behind the wing portions such that the wing portions are optically enlarged, while rotating the windwheel.
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