It shows that reasonable use of artificial roughness on the cooling surface of the mould can enhance the cooling of the mould and increase productivity.

计算和分析表明：在热成形模具外冷却表面合理地设置人为粗糙度有利于强化对模具的冷却，提高生产效率。

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The microstructure of cooling surface was made up of large numbers of iron particles with several micron diameter and copper base.

数量众多的直径约为几微米的铁粒子和铜基体组成了冷却表面的微观组织。

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It investigates experimentally mixed convection and heat transfer augmentation by forced jets in a large rectangular enclosure with a vertical cooling surface.

实验研究了在具有垂直冷却面的大型矩形腔体中因强迫射流造成的混合对流传热。

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The researchers say the report offers evidence that one or more comets were responsible for a sudden cooling period on Earth's surface.

VOA: special.2009.01.20

That helps form clouds and reflects sunlight, cooling the surface of the planet.

FORBES

The basic concept is the same as that underpinning the "white roads" idea -- the development of a technology that can reflect a proportion of the sun's radiation away from the earth's surface and back out into space, thereby cooling the atmosphere and slowing, or even reversing the damaging effects of global climate change.

CNN: The shield of Ra: Could solar reflection save the planet?

Finally, three major available global surface temperature record sources report a steady-to-cooling trend since 2001.

FORBES: Global Warming? No, Natural, Predictable Climate Change