posterior toadj.晚于posterioradj.(在时间；次序上)较后的n.臀部posterior scrotal vessel阴囊后血管posterior fossa hematoma后颅窝血肿posterior uterine artery子宫后动脉posterior ethmoidal cell后筛窦posterior radical artery后根动脉posterior ethmoid artery筛后动脉posterior alveolar canal后牙槽管posterior wall carcinoma下咽后壁癌posterior sagittal index后矢状指数posterior vertebral edge椎体后缘