搜索 - 科创

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我目前在北京，用的自来水据说大部分水源（2/3）来自于地下。地下水一般含氡，而氡气是已经被认定了的致肺癌物质。我总结了下我的日常生活习惯，有两个地方会导致水汽在封闭的室内扩散：1，冬天洗澡完，不换气，...

潜水很多天了，觉得可以动手做了，结果今天买了材料，居然发现不会用。1。买了一个电视机高压包，黑白的，有六个针脚，不知道哪个是输出负极，难道要加电挨个试？不会短路吗？2。买了3DD15D，有两个针脚，怎...

本次实验所采用的阳极金属均为首饰品，溶剂为蒸馏水。用阳极为银(银表面有硫化银)，阴极为铜，电解硫酸铜溶液，一段时间过后，银被腐蚀，生成白色沉淀（应该是硫酸银）。因为银做正极会被腐蚀，所以阳极极换成金，...

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