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Curtain-type water channel
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Water level corresponding type underwater wall
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Curtain-type channel-type crawl
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Buoyance type sea pillar
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Blade of drag type openable power generator
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Drag type switching generator
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Cable coupling type balloon type rocket launcher
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Screen type underwater wall
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Drag type opening closing undersea power generator
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Seesaw type stepper
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Membrane type water passage
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Thermal insulation type mosquito trap container
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Seesaw type foot stepping unit
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