英['kəʊ'siːkənt]美['koʊ'siːkənt] n. 余割 中文 双解 英英 词法 noun(名词) 余割 noun(名词) a function (= a mathematical relation) of an angle that is the reciprocal of sine余割 n.ratio of the hypotenuse to the opposite side of a right-angled triangle同义词：cosec 词态 语态 双解例句 noun(名词) 余割 实用短语arc cosecanthyperbolic cosecant双曲余割,超馀割cosecant-squared antenna余割平方天线,inverse cosecant逆余割,cosecant-squared dish余割平方反射器cosecant curve余割曲线cosecant antennacosecant-squared余割平方天线cosecant-squared beam平方余割包线型射束 同根词词根：