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US5092351A Multi-layer filter cartridge 失效
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Multi-layer filter cartridge
摘要:
This invention relates to a filter cartridge suited for filtering highly viscous liquid.According to the invention, non-twisted yarn (sliver) and hard linear material such as strongly-twisted material supporting the non-twisted yarn on the core such as to form inter-yarn pores between the non-twisted yarn and hard linear material.
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