房室束恒定的穿经中心纤维体。
The bundles of the ventricle penetrated the fibrous body permanently.
用透射电镜观察了5例兔心中心纤维体（CFB）中央部的超微结构。
The ultrastructure of central fibrous body (CFB) was observed in the 5 rabbits with electron microscope.
用透射电镜观察了5例兔心中心纤维体（CFB）中央部的超微结构。
The ultrastructure of central fibrous body (CFB) was observed in the 5 rabbits with electron microscope.
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