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Power transmission device and the wind energy conversion system for including this power transmission device
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Booster engine and the wind-driven generator for including this booster engine
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Traction device
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Chain block
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Hoisting device and hand pulling block with same
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Lifting system based on stepless rope and elevator and hoist with same
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Brake device and clutch system comprising same
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Braking device
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Transmission system
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Transmission system
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Stepless rope transmission device and wind turbine with stepless rope transmission device
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Clutch device
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Turbine head for wind turbine and wind turbine comprising turbine head
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CN102900624A
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Energy storage unit and energy storage system
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