Filtering, cooling of oil after injection of new head.

过滤、冷却后的油重新注入机头。

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As a porous support device has larger opening percentage, the filtering head loss can be greatly reduced.

由于本实用新型的多孔支撑装置开孔率很大，可大大减小过滤水头损失。

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The utility model has the advantages of high speed of filtering, small loss of water head, and generous content of dirt.

无密实核心。具有滤速高、水头损失小、含污量大的优点。

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"There's no guarantee that they are going to be able to get the offensive material out of the system quickly, " said Geoff Haggart, European head of filtering firm WebSense.

BBC: The problems of finding filth