末端后肠形成肛管的上部.The terminal hindgut forms the upper portion of the anal canal.结肠左曲在胚胎发育时乃源自后肠,一般是由下肠系膜动脉分之左结肠动脉负责供应血液.This artery arose from splenic artery and ran inferiolaterally to the area of the left flexure.方法观察99例肠上皮...
The Swiss franc has remained surprisingly strong.瑞士法郎一直出人意料地保持着坚挺。The Swiss franc is a hard currency.瑞士法郎是一种硬货币.The franc had been under no pressure compared with the lira and the pound.与里拉和英镑相比，法郎并没受到压力。...
The freighter carrying pig iron is cleaving through the water.装着生铁的货船正在破浪前进.Objective To construct eukaryotic expression vector of siRNA specific for � � - site APP cleaving enzyme ( BACE ).目的构建β淀粉样前体蛋白裂解酶 ( BACE ) 特异性小干...