只需把风车叶向左转，它就会奏起优美的《华尔兹曲》。
As long as the leaves turn left windmill, it played a beautiful "Waltz Song."
本文将动量-叶素理论推广应用于计算水平轴风车叶轮有侧偏角或上仰角时的气动力。
Based on the traditional Momentum-Blade Element theory, an improved method of aerodynamic calculation about the horizontal axis wind turbine in yaw or in pitch-up is presented in this paper.
传统的小型风力发电机由于使用风车叶，因而需要较大的空间运作，要远离人口稠密的地区。
Conventional small wind turbines are designed to have rotor blades, which require large Spaces to operate in and need to be located away from populated areas.
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