短語詞組短語angular overlap integral 角重曡積分charg density overlap integral 電荷密度重曡積分molecular orbital overlap integral 分子軌道交疊積分group overlap integral 群重疊積分overlap integral method 曡加積分方法Frank -Condon overlap integral 弗蘭尅charge -density overlap integral 電荷密度重曡積分 返回 overlap integral