1) calculation symbol "a"
运算符号"a"
1.
Using the fundamental calculation of well known complex and phasor diagram and the symmetric component methode of three phase system to derive the relative characteristics of the calculation symbol “a”.
利用人们所熟知的复数和相量图的基本运算与三相制的对称分量法 ,推导出运算符号“a”的有关特性图 ,对电力系统所发生的各种类型的故障所进行的分析和计算 ,以便为正确地选择系统的接线方案和继电保护装置及其整定计算方案 ,提供快速、准确的计算方
2) operator-symbol
运算符符号
3) symbolic operation
符号运算
1.
Fourier transform based on MATLAB symbolic operation;
基于MATLAB符号运算的Fourier变换
2.
In accordance with the functions of analytical solution and numerical solution for solving algebraical equation group,a design approach was introduced to conduct the pole placement of PI and PID controllers for first and second order controlled models using the symbolic operation.
利用符号运算,针对代数方程组求解的解析解功能和数值解功能,提出了1种对1阶被控对象和2阶被控对象模型进行PI控制器和PID控制器极点配置的设计方法,给出了相应控制器结构参数的解析解,并在算例中进行了数值仿真验证。
3.
MatLab has a strong symbolic operation function.
MatLab具有强大的符号运算功能。
4) symbolic computation
符号运算
1.
In this paper, a review is presented for the development in the theoretical analysis and symbolic computation of internal solitary waves in stratified fluids, including their application background, experimental reports and results in the theoretical analysis and symbolical computation as well as unsolved problems for future investigations.
综述了分层流体中内孤波的理论分析和符号运算的研究进展状况，系统介绍了应用背景、实验报道、理论分析和符号运算的结果以及有待进一步研究的问
5) Symbolic calculation
符号运算
1.
In contrast to pure numerical modeling method, computer algebra system, which is characterized as symbolic calculation, is used.
由于该系统避开了工程中常用的纯数值建模的思路 ,采用了新的数学工具—以符号运算为特长的计算机代数系统为计算平台 ,才使得该系统具有强大的逻辑关系推导能力。
2.
Using the above results and the work previously done by authors and with the help of symbolic calculation language Mathematica TM , the authors calculate the first order Lie Bcklund invariant vector fields of high symmetry for plan elasticity equations and the Lie algebra of the stress fu.
给出了非退化线性偏微分方程组及二次型泛函对称群的不变向量场的一般形式和一类特殊形式非线性偏微分方程组对称群的简化计算条件；利用以上结论及作者以往工作，借助符号运算语言ＭａｔｈｅｍａｔｉｃａＴＭ计算了平面弹性力学方程组一阶Ｌｉｅ－Ｂａｃｔｌｕｎｄ对称群的不变向量场，以及应力函数对应的三维弹性力学方程组的Ｌｉｅ代数。
3.
How to use symbolic calculation of matlab in analysis of high order dynamic circuit is explained by two second order and four order examples,and relevant programs and running results are given.
通过分别为二阶和四阶动态电路的两个算例,详细说明了在动态电路分析中如何利用MATLAB软件的符号运算功能,且给出了相应的程序代码及运算结果。
6) operational symbol
运算符号
1.
Furthermore,a reccursion formula of the operational symbol was introduced.
引入运算符号 ,导得带任意个集中质量的梁弯曲振动频率方程和振型函数新的解析表达式 。
2.
Furthermore,a reccursion formula of the operational symbol is introduced.
引入运算符号 ,导得其频率方程和振型函数的解析表达式 。
补充资料：不定积分的运算法则
又称为“不定积分的性质”，包含如下两个性质：
（1）设函数f(x)的原函数存在，k是常数，k≠0，则
∫kf(x)dx=k∫f(x)dx
（2）设f(x),g(x)是两个可积分的函数，则
∫[f(x)+g(x)]dx=∫f(x)dx+∫g(x)dx
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条