Study on choosing coefficient of secondary exponential smoothing and initial value;
一种对二次指数平滑预测中参数和初值的研究
Application of genetic algorithms in estimating the initial value of equivalent circuit;
遗传算法在等效电路模型初值估计中的应用
The analysis of impact on rapid decoupling’s convergence from selection of node voltage’s initial value;
节点电压初值的选取对快速解耦法收敛特性的影响
In order to enhance the convergent speed, a new effective method based on rules of equal area and superposition of barycenter of the PWM section with the sine-reference signal for obtaining initial values is proposed.
初值对三电平逆变器特定谐波消除脉宽调制(selected harmonic elimination PWM,SHEPWM)非线性方程组求解过程收敛与否和收敛速度都至关重要。
How to obtain the initial values for the non-linear equations effectively is one of the key problems of SHEPWM method.
该文提出一种基于面积相等和注入零序谐波相结合的非线性方程组的初值求取的方法,简化了多电平逆变器SHEPWM非线性方程组初值的求取方法,显著提高了初值的有效性,根据一个调制度数值和谐波消除目标确定的初值,往往适用于同样谐波消除目标下、调制度在该值附近的一个范围内的所有SHEPWM非线性方程组,并且较大加快了求解非线性方程组的迭代过程的收敛速度;以五电平电压源逆变器为例,采用电力电子专用仿真软件POWERSIM6,对非线性方程组的数值解进行了仿真研究,结果证实了所提初值求取方法的有效性和实用性。
The maximum and minimum are problems which often arise in the production,the life and the scientific research.
最值问题是生产、生活和科学研究中常遇到的一类问题,本文就如何求解函数最值问题介绍几种方法。
Seeking the maximum and minimum of function is the perpetual topic in the medium-sized mathematics,and the function of many variables are difficulties.
求最值问题是中等数学永恒的话题,其中,多元函数求最值是难点。
In this paper the author discusses the solution to function maximum and minimum of value domain.
对函数值域最值的求法进行了探讨。
This is the prime ratio of the nascent increments.
这是最初增量的最初比。
INRs(Initial Negotiating Rights)
最初谈判权（初谈权）
&Copy Original Text
复制最初文本(&C)
First impressions are most lasting.
〔谚语〕最初的印象最深刻。
initial alphabet teaching
最初字母教学 最初字母教学
Philip at first was reserved.
最初菲利浦还不露声色。
The initial estimate was way out, ie very inaccurate.
最初的估计差得很远.
Initially the contract will be in effect for... years.
最初契约的有效期为。。。年。
Clear customer, copy original picture
清除用户, 复制最初图片
The primal, eternal quality of God.
上帝最初的，永恒的性质
the first iron was often even softer than bronze.
最初的铁往往比青铜软。
the first decade of the 21st century
二十一世纪最初十年
the morning of a new nation.
新国家的最初发展阶段
I couldn't carry through with my original idea.
我无法贯彻最初的构想。
His initial reaction was one of shock.
他最初的反应是震惊。
When did the universe come into being?
宇宙最初是何时形成的?
primary sex character
最初性特征第一性征
During these first Hurries,
在最初的一阵纷乱中，