正弦，余弦，正割（secant），余割（cosecant）函数的周期（function period）都是2π，而正切（tangent）、余切（cotangent）函数的周期是π。
基于1996个网页-相关网页
arc cosecant [数] 反余割
Hyperbolic Cosecant 双曲余割 ; 超馀割
cosecant-squared antenna 余割平方天线 ; [电讯] 平方余割天线
inverse cosecant 逆余割 ; [数] 反余割
cosecant-squared dish 余割平方反射器
cosecant curve 余割曲线
cosecant antenna [电讯] 余割天线
cosecant-squared 余割平方天线
cosecant-squared beam 平方余割包线型射束
N (of an angle) a trigonometric function that in a right-angled triangle is the ratio of the length of the hypotenuse to that of the opposite side; the reciprocal of sine 余割 ( abbr: cosec)
The inspection method of cosecant beam antenna is discussed in depth in this paper.
对余割波束天线的检测方法进行了较深入的探讨。
Cosecant Beam Generation Program for computing Phase distribution function and Radiation pattern.
余割波束生成程序的计算相分布函数和辐射模式。
The results of flat-top wave beam and cosecant square wave beam, which are gained using this method, are fairly good, testifying this method is effective in beam shaping of conformal arrays.
运用此方法得到共形圆柱阵列的平顶波束和余割平方波束方向图，效果较好，证明此方法对于共形阵列是有效的。
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