短語詞組短語singular feature point 奇異特征點singular r point 奇點singular boundary point [數(shù)]奇異邊界點singular corresponding point [氣象]對應(yīng)奇點fixed singular point 固定奇點the singular point 奇點量essentially singular point 本性奇點elliptic singular point 橢圓奇點 返回 singular point