结果还表明，当在二次侧三相系统接入文中提出的特殊滤波器时，谐波电流比用常规两相滤波器降低约28%。

The results also indicate that when special filters are connected to secondary three-phase system, the primary harmonic currents decrease by about 28% than by using conventional two-phase filters.

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对初学者来说，安全地拍摄太阳照片的相机上需要一个特殊的太阳滤波器。

For starters, safely taking pictures of the sun requires a special solar filter on the camera.

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码序列的区分是通过匹配滤波器完成的，通过检测输入数据流中特殊的码序列可以区分不同的移动终端。

This discrimination is accomplished by means of a matched filter, whose output indicates when a particular code sequence is detected in the input data stream.

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