搜索 - 科创

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以下是引用hambaby在2007-9-4 23:52:43的发言：98年买的HP6L，当时好象是花了3.3K，郑州东明买的现成的A4热转印纸，效果还可以。没有做过特别密集和纤细的线路走线，个别情况下...

本帖最后由 samhrc 于 2014-6-21 19:44 编辑理论可以～但是机械扫描太慢了实现不了电视那种动态画面扫描。最早发明的电视就是机械扫描（搜索尼普科夫转盘）。机械扫描用惊人的高...

四硝基甲烷可以直接买到，pass，虽说略贵一些。乙酸酐不拿去合成HMX太浪费了……四硝基甲烷也可以用丙酮合成。但是四硝基甲烷法需要先合成硝仿钾，这是个感度较高的家伙，合成过程还需要用到乙醚或者二氯甲烷...

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