好不容易等到這個機會可以兩人共稱一傘,沒想到這卻是個幻想滅的開始....
Low-pass filter - Wikipedia, the free encyclopedia下雨天和心儀的女子共撐一把傘時,很容易發生親密動作進而... 關懷告白,從幻想破滅開始An ideal low-pass filter completely eliminates all frequencies above the cutoff frequency while passing those below unchanged; its frequency response is a rectangular function and is a brick-wall filter. The transition region present in practical filters ...
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