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...
巨大的圆柱形贮气罐huge cylindrical gas tanks潜水员向海岸走去时，铅坠和氧气罐使他们步履维艰。Lead weights and air cylinders encumbered the divers as they walked to the shore.较小的机组直接装在贮气罐上.The smaller units are mounted directly on the receiver tank....
整套设备装在几个柱脚上.The complete unit is mounted on legs.'前'.''踵艏''. '柱'.''脚船的一部分,船首与船骨相接于此.The part of a ship at which the prow joins the keel.一根柱子立在柱脚上.A columnists on its pede...