Benzyl butyrate was synthesized by using potassium bisulfate as the catalyst.以硫酸氢钾为催化剂,丁酸和苄醇为原料合成丁酸苄酯.Isoamyl butyrate was synthesized by using potassium bisulfate as the catalyst.以硫酸氢钾为催化剂,正丁酸和异戊醇为原料合成了正丁酸异戊酯.Isoamyl bu...
他正患鼻粘膜炎.He was suffering from nasal catarrh.摘要目的探讨在放射性粘膜炎中是否存在致病菌方法.Objective To investigate pathogen lose existing or not in patients with radiation mucositis.目的: 观察顽固性咽部溃疡 ( RPU ) 患者咽部组织粘膜炎细胞的病理意义.Objective : To study ...
"Wait a damn minute," Mindy spat. "Nobody said anything about staying overnight."“该死的,等一下”,明迪愤愤地说道,“谁也没说过要过夜。”Nobody else believed that they had tried to rub out the pope.其他人都不相信他们试图杀死教皇。Drew made some remarks to nobody ...