很多环戊烷的衍生物在这个范围也出现吸收.Many cyclopentane derivatives also absorb in this region.后者是由二氧杂环戊烷中活化较弱的C -H 键离解而产生的.The latter arises from abstraction of the somewhat lesser activated C - H bond in the dioxolane.控制缩合反应的温度,还得到一种苯并环...
Our anxieties can also be controlled by isolating thoughts, feelings and memories.我们也可以通过将一些想法、感情与记忆分开考虑以控制焦虑情绪。Colour filters are not very effective in isolating narrow spectral bands.一些滤色片不能很有效地分离狭窄的光谱带.This became kno...