搜索 - 科创

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引用第11楼luxin88于2011-06-21 08:38发表的 Re:精彩的300g铝热~ 附带高锰酸钾与甘油自燃80g氯糖混合物暴力燃烧 : 我一直觉得LZ视频里面那个像烧杯。。。。。我...

光在空气中低吸收窗口就几个波段，远远少于低频电磁波。空气中气体分子的瑞利散射，还有尘埃等等的吸收，就算是激光，衰减率也非常高。大气激光通信系统很早就问世了，主要缺点在中继距离短，需要功率大，受天气影响...

作者：王为　　蜜蜂社会存在着相当大的潜在冲突，存在着相当残忍的杀婴行为，存在着相当粗暴的监督手段。但是有时候，这一切手段都失去了作用，整个蜜蜂社会出现无政府状态。　　蜜蜂的王国看上去非常和谐，蜂王不...

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