搜索 - 科创

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从20年末入坑那阵到今天已经一年多了，也没有正经发过什么文章，那就拿之前发射的微型火箭糊弄一下吧。当时基本没什么基础，望多多包涵，也希望指点出问题。该作品从21年春节开始设计，于21年四月份发射，总历...

的氢氧化钠溶液煮沸处理试管，然后依次用自来水和蒸馏水洗净；\"水浴温热\"的意思是说做银镜反应的试管必须放在水浴中温热，切不可直接放在酒精灯上加热[联想：去掉试管上的银镜可用硝酸，这样既可除掉银镜，又可回收银

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