An expansion wave in accelerating flow broadens.

膨胀波在加速流中变宽。

youdao

NPLS images at high spatiotemporal resolution reveal shockwave, expansion wave, boundary layer and wake in the flow.

高时空分辨率的NPLS图像再现了激波、膨胀波、边界层及尾迹等流场结构。

youdao

At the point where the last expansion wave in the series intersects the wall, the wall pressure is near the ambient value.

在点，最后膨胀波在一系列交叉的墙，墙的压力是附近的空气中的价值。

youdao

Mr Blair hopes agreement will be reached on Russian involvement in decision-making by the planned Prague summit next autumn, when Nato will announce the size of its next wave of expansion.

BBC: Analysis: Nato and Russia draw closer

But the news further depressed the company's share price, which has fallen sharply in the last year, as analysts worried that the company would lose out on the next wave of mobile phone expansion in Europe.

BBC: BT loses in Italian mobile auction