搜索 - 科创

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四嗪类化合物因为可以发生n → π* 跃迁，颜色极为艳丽，n → π* 跃迁在理论上是对称性禁阻的，其摩尔吸光系数（ε）通常只有 10²–10³ 级别，远低于普通 π → π* 跃迁，这意味着它的颜色...

引用第25楼power_rdx于2009-11-01 19:26发表的 :“将玻璃加热到上千度，也能导电了，请问此时玻璃是否被击穿啊？”“继续玩文字游戏，上千度的玻璃都成流体了，是比“击穿”彻底多了...

本帖最后由虎哥于 2014-2-18 00:37 编辑本系列经典的文章由BG2VO多年前所著，目前从未被超越，帖到KC供大家参考。第一部分，概述电子电路的电压基准最早是用稳压二极管，利...

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