osculating point吻: lips切點(diǎn): point of contact; point of t ...切點(diǎn): [數(shù)學(xué)] point of contact; point of tangency互切點(diǎn): tacnode會(huì)切點(diǎn): cusp下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯