The mean relative reactivity of three kinds of protons towards chlorination is R(CH)>R (CH2) >R(CH3), and the chlorine atoms are distributed homogeneously in the molecular chain.是什么意思_The mean relative reactivity of three kinds of protons towards chlorination is R(CH)>R (CH2) >R(CH3), and the chlorine atoms are distributed homogeneously in the molecular chain.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句