搜索 - 科创

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这个是我做的两灯再生机这里还有些照片XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 电路图英国二战时期的特工电台Paraset 我只做了接收部分谐...

话说还有个很酷的玩法：望远镜目镜前面加一片透射光栅，不用狭缝，每颗星星拉长成一条光谱带。可以看到某些特殊恒星的光谱里有发射谱线，天然的激光器。用光盘反射应该也行。http://laserstars.o...

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