基本解释异亚硝基同根派生 英汉例句ethyl 2 - ( 2 - aminothiazole - 4 - yl) - 2 - hydroxyimino acetate 头孢他啶侧链酸ethyl 2- (2- aminothiazole-4- yl) -2- hydroxyimino acetate 去甲氨噻肟酸乙酯hydroxyimino group 羟氨基