“polar effect”的概念、定义、翻译、参考文献-科学参考

单词	polar effect
释义	polar effect Encyclopedia 理学极性效应释 polar effect极性效应由于取代基（与氢原子相比）具有给电子或是吸电子性质，使分子某些部分的电子密度下降或上升，从而使反应分子在某个阶段带有正电荷（或部分正电荷）或负电荷（或部分负电荷）的效应。又称电子效应。 Astronomy polar effect磁极效应 Chemistry ＞有机化学＞物理有机化学＞释义 polar effect极性效应
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