posterior lip后唇posterioradj.(在时间；次序上)较后的n.臀部posterior root of spinal nerves脊神经后根Posterior intra-vaginal sling阴道后壁悬吊posterior vertex focal distance后顶焦距, 后焦距posterior ventral lateral plate后腹侧片posterior column of spinal cord脊髓背侧柱,脊髓后柱posterior division of silkgland后部丝腺posterior conjunctival arteries后结膜动脉,结膜后动脉posterior spinocerebellar tract脊髓小脑后束,脊髓小脑背侧束posterior myocardial infarction后壁心肌梗塞posterior capsule opaciflcation后囊膜混浊