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asymptoten.

英 'æsɪm(p)təʊt | 美 'æsɪm,tot
中文n. [数] 渐近线
词根词源
asymptote (n.)"straight line continually approaching but never meeting a curve," 1650s, from Greek asymptotos "not falling together," from a- "not" + syn "with" + ptotos "fallen," verbal adjective from piptein "to fall" (see symptom). Related: Asymptotic.
关键词
asymptote