柯林斯詞典electron /??l?ktr?n/ (electrons) 1. N-COUNT An electron is a tiny particle of matter that is smaller than an atom and has a negative electrical charge. 電子[技術(shù)] Most things are balanced - with equal numbers of electrons and protons. 大部分物躰都是電荷平衡的——含等量的電子和質(zhì)子。 返回 electron劍橋詞典an extremely small piece of matter with a negative electrical charge 電子 比較neutron proton 返回 electron