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...
也可用雌性F1与隐性纯合雄性亲本回交.F 1 females could be backcrossed to the male homozygous recessive parent.该方法可以很方便地应用于实际的回交育种.The method can be conveniently applied to practical backcross breeding programs.聚类分析发现方正银螂最先与异育银螂聚成一支, 再与异育银...
午餐可以吃自助餐，也可以选套餐。At lunchtime, there's a choice between the buffet or the set menu.有最低消费是4英镑的两道菜加咖啡的套餐。There is a set menu from £4.00 for two courses with coffee.套餐里包括在一周中间从盖特威克机场出发的航班机票。The package includes midweek ...