过滤可以定义为液体通过有孔的介质去除悬浮物中携带的物质。

Filtration is defined as the passage of fluid trough a porous medium to remove matter held in suspension.

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一种散热鳍片穿孔涂布工具及涂布方法，该工具为一灌入有导热介质的 中空管体，而在管体的一端周缘上设有数个出料孔，并在邻近该出料孔的下 方周缘处环设有具弹性的刮板；

The related perforating coating tool for a heat-conducting fin comprises: a hollow tube filled with conductive medium, some discharge holes on one end of the tube, and a spring scraper under the hole.

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