Lack of standard Chinese mail dataset, the performance of various Spam-filter systems can't be evaluated.

由于缺乏标准的中文邮件样本集，无法评测不同垃圾邮件过滤系统的性能。

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ADVANTAGE MLS filters are the perfect alternative to expensive, automatic filter systems. MLS filters are more dependable than many other intricate filters.

ADVANTAGE的MLS过滤器，可取代昂贵的，自动过滤系统，是一款优质的产品。该设备与许多其他的复杂过滤器相比，更可靠。

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The stability of VSI active power filter systems is analyzed, and a method for suppressing transient oscillations in these systems without inserting damping resistors is proposed in this article.

本文分析了电压逆变器型有源滤波器系统的稳定性，提出了不用阻尼电阻抑制系统振荡的方法。

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The panel of cycling advocates suggested filter systems at traffic lights, priority lanes at roundabouts and for greater private sector involvement, for example getting firms to sponsor cycle lanes or highways.

BBC: Transport Committee

Continue to invest in systems to aggressively filter out sensitive information.

FORBES: Blippy Apologizes For Google-Searchable Credit Cards, Announces New Security Plan

Systems based on machine learning filter out noise in big data or high resolution models by scanning for patterns that humans would like to find but cannot.

FORBES: The Man-Machine Framework: How to Build Machine-Learning Applications the Right Way