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。

youdao

You can't just pitch up 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》

When I got up at five that cold morning, it was pitch dark.

当我在那个寒冷的早晨5点钟起身时， 天一片漆黑。

《新英汉大辞典》

You can see them in the sopranos and altos up there and they just sit there on that pitch--a long note: one, two, three, four.

你可以在高音与中音区看到他们,而且他们一直留在那个音高上,一个长音符,一,二,三,四

耶鲁公开课 - 聆听音乐课程节选

So, given the set-up, you kind of feel what you're missing, you know, what this home pitch is-- the pitch to which you are gravitating.

那么,根据规律,你发现缺点了什么,基本的音高是,那个吸引你的音高

耶鲁公开课 - 聆听音乐课程节选

The firm hopes that nice restaurants and sellers of romantic holidays will pay to pitch to loved-up couples.

ECONOMIST: The world��s most exclusive social network

But whereas before the 1996 European championships Gazza's off-field antics had been interspersed with brilliant displays on the pitch, in the run-up to this year's World Cup he has seemed slow and struggling.

ECONOMIST: When Geri met Gazza

Years ago, before his Hindu-nationalist party came to power, Mr Thackeray's storm-troopers dug up the pitch on the eve of an Indo-Pak match in Mumbai.

ECONOMIST: Politics stops play