Under this background, the present study of the heat transfer and flow characteristics of plate fin heat sinks and staggered heat sinks with forced air -cooling were carried out.

本文关于强迫风冷中板翅式和叉排式散热器换热性能和流动特性的研究即以这一重要领域为背景。

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Moist air forced to flow upward around mountain tops can create lenticular clouds.

这些透镜状云是山顶周围上升的潮湿空气形成的。

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Air is forced up from the buoy counterweight tube during downward motion causing the balls to seal the air ports in the valve, thus forcing the air to flow into the whistle.

空气在向下运动过程中受到浮标向上的推力，使阀球将阀门里的气舱密封住，这样迫使气流进入雾笛。

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In a warm front, a mass of relatively warm air pushes against a block of cooler air and is forced to flow up over it.

BBC: Turbulence ahead: Flight heads into storm's heart