随着生长，男女上颌相对于颅底的位置无显著变化，而下颌突度增加；
With growth, the maxillary position which related to the cranial base was remained relatively constant while the mandible continually protruded forward.
随着生长，男女上颌相对于颅底的位置无显著变化，而下颌突度增加；
With growth, the maxillary position which related to the cranial base was remained relatively constant while the mandible continually protruded forward.
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