单词	五边形数
释义	五边形数 pentagonal number
随便看	contour of face contour of flange contour of gray level contour of grinding wheel contour of groove contour of heights Contour of ice rich layer contour of land contour of moire fringe contour of nasal bridge contour of nasal tip contour of noise contour of objects contour of part contour of precordial region contour of recharge contour of right bundle branch block contour of water contour of water table contourogram contourograph contour optimization contour orientation rate contourquenching contour quenching