搜索 - 科创

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1 材料LED两个（并联）不用很亮的但是最好是暖色调的冷色很难受我的偏黄不错2 一个电阻（限流到30毫安即可）3 USB线头（右正左负这个不用说了吧）4 一条比较硬的铁丝...

制备能才的反应大多是放热反应，在天气炎热的南方，冷却成了一个大问题。经常出现由于冰块不够导致过热冒料的尴尬场面。为了彻底解决这个问题，需要一个能实时产生冰水的装置··· 小功率压缩机水冷。。。小噪...

进来对磨制镜片感兴趣。没有亲手做过。但对于资料显示的可行性表示赞成。镜片分为反射镜和折射镜。它们都是用玻璃磨制出来的。反射镜最终送到厂家走一次镀铝过程就行。镜片通常是球面的。理论上抛物面才完美，但实际...

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