几个实例 CH3 CH3 C OCH3 OH COOH 邻氯苯甲醚 间甲苯酚 对甲苯甲酸 CH3 CH3 CH3 CH3 CH3 CH3 H3C CH3 CH3 连三甲苯 偏三甲苯 间三甲苯几 个 实 例 Cl OCH3 CH3 OH CH3 COOH CH3 CH3 CH3 CH3 CH3 CH3 CH3 H CH3 3C 连三甲苯 偏三甲苯 间三甲苯 邻氯苯甲醚 间甲苯酚 对甲苯甲酸