centrum
特殊用法acoelous centrum1.■无凹椎体amphicoelous centrum1.■两凹椎体amphiplatyan centrum1.■两平椎体anemocoelous centrum1.■异凹椎体arch centrum1.■弓形椎体atlantean centrum1.■寰椎体chordal centrum1.■索成锥体heterocoelous centrum1.■鞍形椎体opisthocoelous centrum1.■后凹椎体perichordal centrum1.■弓成椎体procoelous centrum1.■前凹椎体pseudosphaeriaceous centrum1.■假球壳菌型核心centrum of a group1.■群的中核