adj
数据来源:WordNet
Having the lower jaw or teeth projecting beyond the upper ; underhung . Study of move trace of mandible from edentulous position to the largest open mouth position
下门牙或下颌突出的下颌或牙突出超过上颌或牙的;下颚突出的无牙颌位至最大开口位下颌运动规律的初步探讨