4n

FFT principle used to compute 4N real numbers by N complex transform

的计算。用N点变换计算实数4N点的FFT原理

A new structuring method of perfect magic square of 4n orders

4n阶完美幻方的新构造法

A study on magic square matrix set-up of 4N order

4N阶魔方方阵构成方法研究

Sufficient condition of number set constructing pandiagonal magic square of order 4N

数集构成4n阶泛对角线幻方的充分条件

Keys of γ ' - Fe 4N Magnetic Powder Preparation

合成γ′-Fe4N磁粉的关键因素

Order evolution equation is obtained and it generates a semigroup when 4n ?

2阶发展方程转化为一阶发展方程组，求得4n？

Test results of the linear and temperature features for 4N series opt-coupler were reported .

报告了4N系列光电耦合器件的线性性和温度特性的测试结果。

Operator Semigroup of 4n ? 2 Order Evolution Equations

4n-2阶发展方程的算子半群

4n Finally , compared the multipath effort between the wavelets analysis and the FIR filter design .

最后，对基于小波分析和基于FIR滤波器设计的多路径效应提取进行了比较。

On Reverse Order Law for { 1 , 3M , 4N } - inverse of Two Matrix Product

两矩阵乘积的{1,3M，4N}-逆的反序

A complete classification of finite groups of order 4N which have cyclic subgroups of odd order M

具有奇数m阶循环子群的4m阶有限群之完全分类

Excitation function for elastic collision between 4N nuclei

4N核弹性碰撞的激发函数

Construction of magic cubes of order 4N

4N阶幻立方的构造

4n Exploring ways of implementing of number-shape combination methodology in teaching and providing some teaching instances .

探索渗透数形结合思想方法的教学途径，并给出一些教学实例；

Tetraploidy ( 4N ) was found in 2 cases ( 1.6 % );

四倍体（4N）2例（1.6%）；

Developmental Characteristics and Applications of 2n / 4n Chimaeras

2n/4n嵌合体胚胎的发育特点及其应用

A Semi-Microscopic Optical Potential Between 4N Nuclei with Same Masses

相同质量4N核间的半微观光学势

Plant regeneration in tissue culture of Setaria yunnanensis x s.italica ( 4n ) f_1 plants

[云南狗尾革×谷子（四倍体）]F1组织培养中的植株再生

A Homeomorphism and Linear Homeomorphism Theorem for Certain Type of 4n ￣( th ) - Order Differential Operator with a Parameter

某类带参数4n－阶微分算子的一个同胚与线性同胚定理

The single phase γ′ Fe 4N thin films with the random crystal orientation was prepared when the substrate was Si ( 111 ) .

结果表明，以（111）硅片为基片，可制得无晶粒择优取向的单一γ′Fe4N相；

A 4N Ha solar flare occurred on April 1 , 1981 , and accompanied with strong type IV radio burst .

1981年4月1日太阳发生一个4N级Hα耀斑并伴随出现强烈的IV型射电爆发。

This paper summarized methods of producing 2n / 4n chimaeras , and developmental characteristics and possible applications of the chimaeras .

就2n/4n嵌合体胚胎的制作、嵌合体胚胎的发育特点及该技术的可能应用进行了综述。

Triploids are usually sterile and do not form a pathway by which 4n and 2n plants can exchange genes .

三倍体通常是不育的，因而不能作为4n和2n植物交换基因的途径。

X-Ray , H_ α, and Radio Observational Study of the 4N / X2.3 Flare of April 1,1981

1981年4月1日大耀斑的X射线、可见光和射电辐射的观测研究

The Anatomical Observation on the Root Primordium of Robinia pseudoacacial ( 4n ) Twig Cutting

四倍体刺槐嫩枝插穗生根的解剖学观察

Order evolution equation that is one of the best important standard type about time-delay distributed parameter system expand from two order evolution equation and construct the inner product to become 4n ?

2阶发展方程，同时构造内积形成4n？

The internal friction of grain boundaries in 4N iron and ferroalloys added with Nb and C was studied before and after a wet hydrogen treatment .

研究了湿氢处理前、后的Fe及其加Nb，C的合金晶界内耗。

A deadlock - free fully adaptive minimal routing algorithm for meshes is presented . This new algorithm requires only 4n - 2 virtual channels for an - dimensional mesh .

本文给出了一个基于网格的无死锁的完全适应性最小路由算法，该算法对于n维网格只需要4n-2个虚拟通道。

AC-program composition method is given to construct 4 n - order natural square . We realize the construction of symmetrical magic square of 4n - order by natural square .

用C-程序实现4n阶自然方阵的构造，并利用自然方阵构造4n阶对称交换幻方。

In 28 days salt stess a few physiological and biochemical indexes of 4N , Rcr , 2488 which were plant in pot were determined .

通过盆栽试验对4N、Rcr、2488、和本地刺槐四个无性系进行盐胁迫试验。