分圆

The digital down converter adopts octant mapping algorithm and utilizes the symmetry of sinusoidal value and cosine value to divide [0, 2 Pi] into eight sections.

本数字下变频器采用八分圆映射算法，利用正弦值、余弦值的对称性，把[0，2π]分成8个区间。

These wind roses show the probability of occurrence of wind speeds for sixteen compass points.

这些风的图形揭示了十六分圆盘上风速出现的概率。

In this paper, for a kind of generalized cyclotomic binary sequences with prime period N = 6 f+1, we computer their linear complexity. Specially, any one of the binary sequences has optimum balance among 0's and 1's.

本文中，我们构造了一类以奇素数N = 6 f+1为周期的分圆二元序列，证明了这类序列具有&好&的线性复杂度，适合于实际应用。

First, considering the construction characteristic of Reed-Solomon code, we present a kind of new construction method for linear codes by using the factorization properties of cyclotomic polynomials on finite fields.

在纠错码的设计与分析方面：首先，结合Reed-Solomon码的构造特点，利用有限域F_q上分圆多项式的分解特性来构造F_q上线性码。

In this paper, I first give two methods with which we can determine all the power integral bases in maximal real subfields of cyclotomic fields. Then I determine all the power integral bases for ?

本文首先给出了确定分圆域的极大实子域的幂元整基的两种方法；然后利用这两种方法找出了Qζ_m+ζ_m~(-1(m=5，7，8，9，12，16，20，24)的所有幂元整基。

Read a paper about cyclotomic polynomials and prime numbers by Yves Gallot.

阅读由Yves Gallot撰写的关于分圆多项式和素数的文章。

Find factorizations of cyclotomic numbers at Factorizations of Cyclotomic Numbers.

在Factorizations of Cyclotomic Numbers项目中寻找分圆数因子。

M+ζ_m~-1(m = 5, 7, 8, 9, 12, 16, 20, 24) These results may be helpful to the research of the power integral bases in maximal real subfields of any cyclotomic fields.

所得到的结果对于任意分圆域的极大实子域的幂元整基的探讨很有帮助。

At last, By using the factorization properties of cyclotomic polynmials on finite fields and the construction characteristic of cyclic codes, we present the relation of the period distribution of cyclic codes and the period distribution of their dual codes, establish the explicit formula for the number of the codewords without inner-period of the cyclic codes and their dual codes, find the method for computing the dimension and the period distribution of narrow-sense primitive BCH codes,and study the inverse question of period distribution of cyclic codes.

最后，利用有限域上分圆多项式的分解特性和循环码的构造特点，揭示了循环码的周期分布与其对偶码周期分布之间的内在联系，确定了一般循环码及其对偶码内无内周期码字的精确计数公式，决定了狭义本原BCH码的维数与周期分布，讨论了循环码周期分布的反问题。

In each subcarrier there are four possible constellation points that lie in each quadrant in the complex plane and are equidistant from the real and imaginary axes.

在 每个副载波有四个可能的星座在于合成物的每个四分圆的点将是距离相等的刨平并且从那真正的和想像的轴。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。