The incidence of gallstones increases progressively with age.胆石症的发病率随年龄而逐渐增高.Objective To evaluate collodion - enhancing technique for thin paraffin sections of the gallstones.目的:评估火棉胶增强技术在胆囊结石切片中的应用.Gallstones are forme...
那书脊是烫金的.The spine is tooled in gold.这本书的书脊很漂亮,很吸引人.The spine of the book is very beautiful and attractive.圆脊机: 把书脊做成凸起圆弧的机器.Back rounding machine: Machine for rounding the back of a book....