Discrete Time Signal and System
Frequency Response
Frequency Response
Discrete Time Signal and System
不要吐槽涂色的那两张。。。真的是因为彩铅的问题(¬､¬)(一脸不信)有一张妲己是没上色的，484好一点呢^_^
The year in pictures (CNN) Couples kiss in New York's Tim...
Yesterday pictures for you guys
/资源库/desktop pictures
上面那张怎么这么好看呀。好好看。暴击。
Any word in an old song, 老歌里的一句歌词， like a picture I misse...
本文标题：Pictures
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