The acid ewolises nearly as well as the ester.此酸的烯醇化几乎象酯一样良好.Diphenyl carbonate shows a typical vinyl ester effect.碳酸二苯酯表现典型的乙烯的酯类的效应.Ester is one of the most important compounds in Organic Chemistry.酯是有机化学中最主要的化合物之一....
他患了消化道疾病.He had the disease of alimentary canal.医院开发研制的仪器使医生们得以将显微内镜伸入消化道。Instruments developed at the hospital allow doctors to thread microscopic telescopes into the digestive tract.胆道出血表现为上消化道出血.Hemobilia is manifeste...