... wide angle lens 宽角物镜 wide bandpass filter 宽带滤光片 widened V-shaped valley 青年谷 ...
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These filters are designed by using the concept of wave digital lattice filter and by making use of a novel approximate transformation method for wide band bandpass filters.
这些滤波器应用了波数字格形滤波器概念和宽带带通滤波器的新近似变换方法。
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