| 摘要 |
Water barricade arrangement (44) having a number of floating waterwheels (10.1, 10.2, 10.3) joined adjacent eac other and adapted to float in and extend fully across a water course (46) so that water (56) flowing along the wate course (46) cannot flow around any one waterwheel (10.1, 10.2, 10.3).
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