Well, it's just the area of a unit circle.
这就等于一个单位圆的面积。
And we will say, we are on the unit circle.
我们在单位圆上。
That is a circle of radius 1. That's the unit circle.
是一个半径为1的圆，那是单位圆。
So, that means that here, we actually have the unit circle.
也就是我们在这里得到了单位圆。
Let's do the second part, which is a portion of the unit circle.
让我们来做第二部分，这是单位圆上的一段圆弧。
Sun Daochun proves the existence theorem on the maximum condensation point of the zero order meromorphic functions in the unit circle.
孙道椿证明了单位圆内一类零级亚纯函数的最大型聚值点存在性定理，本文将这一结果在一定程度上推广到了亚纯代数体函数。
Quasihomographies and quasi-symmetric function on the unit circle are geometric characterizations of boundary value of quasi-conformal mapping.
单位圆上的拟交比同胚和拟对称函数，都是拟共形映照边界值的一种几何表征。
Finally, the improved algorithm and Schelkunoff's method have been combined to optimize roots which are not on the unit circle of linear array, then shaped-beam and zeros control are realized.
最后结合谢昆诺夫单位圆法，利用该算法对直线阵列天线不在单位圆上的根进行优化，实现了方向图的波束赋形和零点控制。
Finally, the improved algorithm and Schelkunoff's method have been combined to optimize roots which are not on the unit circle of linear array, then shaped-beam and zeros control are realized.
最后结合谢昆诺夫单位圆法，利用该算法对直线阵列天线不在单位圆上的根进行优化，实现了方向图的波束赋形和零点控制。
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