fibrous ring meaning in Chinese

纤维环

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。