addition reaction
noun/əˈdɪʃn riækʃn/
/əˈdɪʃn riækʃn/
(chemistry)- a chemical reaction in which the whole of one molecule combines with the whole of another to form a single larger molecule
加成反应：一种化学反应，其中一个分子的整体与另一个分子的整体结合以形成单个较大的分子