The utility model USES the reasonable rotation of the blades to overcome windage resistance effectively and to increase the utilization rate of wind energy.
该实用新型利用桨叶合理自转有效克服风阻，提高风能利用率。
The utility model USES the reasonable rotation of the blades to overcome windage resistance effectively and to increase the utilization rate of wind energy.
该实用新型利用桨叶合理自转有效克服风阻，提高风能利用率。
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