吸電子electron: n. 【物理學(xué)】電子。 the electron bea ...withdraw: vt. (-drew; -drawn ) 1.縮回(手等 ...electron-withdrawing: 吸電子electron withdrawing group: 吸電子基團(tuán)electron withdrawing proup: 吸電子基團(tuán)下載手機(jī)詞典可隨時隨地查詞查翻譯