| 1. | The abdominal segment of an insect
腹面昆虫的腹部体节 |
| 2. | Relating to or situated on or close to the abdomen ; abdominal
腹的；腹部的；腹面的关于或位于或邻近腹部的；腹部的 |
| 3. | They point out not the good qualities of candidates , but the bad qualities of their opponents
这些信息通常都是腹面的或者是攻击性的。 |
| 4. | The longest diameter of this oval shape is oriented front to back , and the broadest part of the oval is against the mother ' s back
?们的横切面也是卵形，长轴正对著腹面与背面，卵圆最宽的一端贴近背面。 |
| 5. | When testis matured , seminiferous united to form a testis - net in the ventical with a horizontal . a line of efferent duct extanded from testis - net
精巢成熟时，在精巢腹面的纵沟内，精细管相互吻合形成精巢网。 |
| 6. | Midway through , however , this orientation shifts 90 degrees , and the long axis of the oval extends from the front of the mother ' s body to her back
不过到了中段，产道最宽的方位就转了90度，也就是卵形长轴分别朝向孕妇腹面与背面。 |
| 7. | Dorsiventral describing a structure that has distinct upper and lower surfaces . a dorsiventrally flattened structure has flat dorsal and ventral surfaces and very narrow lateral surfaces
异面（背腹型） :指上下表面结构具有明显差异。异面平滑结构指有平滑的背、腹面，以及非常狭窄的侧表面。 |
| 8. | 4 ) the female of xenocera is very special , the female is similar to male in antenna with 9th and 10th segment wider , llth segment widest , bearing slightly hollowed scupture on ventral surface
辛伪叶甲属ienoceraborchcann雌性较特殊，其雌性触角具雄性触角的特征，如第9 、 10节强烈变宽，端节最宽，腹面稍凹陷。 |
| 9. | It " s shown from the results that the pituitary gland of silurus asotus originates from two embryonic cells of different position ; and the doral wall of the original cavum oris forms the rostral pars distali ( rpd ) and the proximal pars distalis ( ppd ) ; the infundibulum of the ventral part of diencephalons forms the the pars intermedia ( pi ) and the neurohypophsis
结果表明：鲇脑垂体由两个不同部位的胚胎细胞形成，原始口腔背壁外胚层分离出来的细胞构成腺垂体的前外侧部( rpd )和中外侧部( ppd ) ，从间脑腹面漏斗体分离出来的细胞构成腺垂体中间部( pi )及神经垂体( nh ) 。 |
| 10. | Pancreaticoduodenalis v . mesenterica and a . gastrolinealis join together and then enter the right liver ; v . gastrica anterior v . oesophagea join together and then enter the left liver v . abdominalis enter the liver by the ortho - axis of liver the characteristic of histology about the heart and blood vessels : cardiac muscle cells are not linked by the structure of intercalated discs ; the endothelium of blood vessels is simple columnar epithelium
3 .静脉系统：后腔静脉与后主静脉同时存在，肾门静脉系统与后腔静脉之间没有交通支，输卵管静脉汇入肾门静脉，肝门静脉分三处入肝：胰十二指肠静脉、肠系膜静脉和胃脾静脉三者汇合后进入右肝，胃前静脉和食管静脉汇合后进入左肝背面，腹静脉从肝脏腹面正中线入肝。 |
