In accordance with the analysis of testing data, the calculation formula of PV type cyclone pressure drop and turning point concentration are obtained.

通过对试验数据的分析，得出了PV型旋风分离器压降和转折点浓度的计算公式。

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This is the exhibition's point of greatest concentration, a fascinating sort of before and after, where the befores are seat-of-the-pants, coarsely done as if in the den or the dark, and the afters are refined appropriation, executed in ateliers of bright light and even brighter technique labels like Yohji Yamamoto, Alexander McQueen, Burberry and Balmain.

WSJ: Loud, Fast and Nasty | Punk: Chaos to Couture | Metropolitan Museum of Art | By Laura Jacobs

The large number and concentration of craters point to an old asteroid.

BBC: Eros is 'no ordinary rock'

The Chinese showed signs of recovery by holding his next two service games, and even found himself with a break point in game eight as Murray's concentration wavered.

BBC: Andy Murray beats Bai Yan in round two in Shanghai