- circumferential lamellae
- 环: ring; hoop
- 骨板: bone lamella; osteone; osseo ...
- 内、外环骨板: internal and external circumfereutial lamella
- 内环骨板: inner circumferential lamella; internal basic lamellae
- 外环骨板: external circumferential lamella; outer basic lamellae; outer circumferential lamella
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