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.
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。
2
You can't just pitchup and expect to get in without a ticket.
你可不能说来就来，还想无票入场。
《牛津词典》
3
When I got up at five that cold morning, it was pitch dark.