Chfilt: Used to change existing filter rules.

chfilt：用来改变现有的过滤规则。

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Drop in filters are easier to fit, requiring just a simple swap with the existing filter, and are most beneficial to automatic cars as they can work at low revs.

下降容易合适的过滤器，只需要简单的交换与现有的滤波器，并是最有利于自动汽车作为他们可以工作在低转速。

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The test result showed that the dewatering of the classified fine fraction tailings by the existing filter press resulted in increased product moisture and filtering time.

试验结果表明，分级后的细粒级尾矿利用现有的压滤机脱水，产品水分和压滤生产时间都增加。

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Self-contained vacuum, pump and filter system works without suction lines or other modifications to existing systems.

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The existing structures could be strengthen with the use of peripheral steel beams that allow for high velocity wind to filter through the platform without obstructions.

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Though there is no reason to use Dr Knight's invention to replace existing optical fibres, it could, by varying the spacing of the air-filled tubes, make a handy filter allowing selected wavelengths (and the messages they carry) to enter or leave the waveguide while the others are contained.

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