周围结构 meaning in Chinese

environmental structure

Study on microanatomy of the jugular foramen and the adjacent structures
颈静脉孔及其周围结构显微解剖研究
We studied the microsurgical anatomy of this region concentrating on the third segment ( v3 ) of the va , from which extends the transverse foramen of the axis to the dural penetration by the va , we paid particular attention to the loops , branches , supporting fibrous rings , and surrounding venous structures of the va , as well as the relationship between their anatomical elements and their surrounding structures
本文研究枕下区域的显微解剖，主要集中在椎动脉的第三段( thethirdsegmentofvertebralartery ， v _ 3 ) ，其范围从枢椎横突孔到椎动脉穿入硬膜处，并侧重研究了v _ 3的血管袢、分支、纤维环和周围的静脉结构，以及它们与周围结构的解剖关系。