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| sacral canal (纵贯骶骨全长，横断面呈三角形，借两侧的椎间孔与骶前孔和骶后孔相通。向上通狭义椎管，向下开口于骶管裂孔) | |||
| sacral canal | |||
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骶 管 : 7 phrases in 4 subjects |
| Anatomy | 1 |
| Nursing | 2 |
| Sports | 1 |
| Surgery | 3 |
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