对于对称系统，给出了可控性的充要条件。
A sufficient and necessary condition of controllability for symmetric systems is al...
对称系统像差中存在少量的非对称像差对复原结果的准确性影响不大。
It doesn't influence the veracity of recovered results much even if there exists a small unsymmetrical aberration in the aberration of the symmetrical system.
通过构造一个虚拟的三相对称系统，该检测方法可以推广到单相电力系统的谐波电流检测。
The single-phase harmonic current components can also be detected by the method effectively through constructing a dummy symmetry three-phase power system.
文中证明了如果广义对称系统在一点的邻域可控，那么系统在包含该点群作用轨道的一个开集上是可控的。
It is shown that if a generalized symmetric system is controllable on a neighborhood of a point, then the system is controllable on some open set which includes the group action-orbit at the point.
一个复杂的由发光的点和线连结而成的图案对称地遍布整个身体，几乎跟随着神经系统或内分泌系统。
A complex pattern of iridescent dots and lines, perfectly symmetrical, runs over the body, almost following the lines of the nervous or circulatory system.
这些因素使多玩家在线游戏引擎可以利用并行数据库技术，比如对称多处理器，以及其他大内存系统。
These factors allow a multiplayer online game engine to take advantage of the power of parallel database technology, such as symmetric multiprocessors, and other large memory systems.
但是到了二十年后的现在，多处理利用对称多处理技术又回到了个人计算机系统中。
But now, twenty years later, multiprocessing has returned to these same personal computer systems through symmetric multiprocessing.
它还允许实现高级概念上的仿真如对称多处理系统多达255个CPU和其他处理器架构如arm和PowerPC。
It also permits emulation of advanced concepts, such as symmetric multiprocessing systems (up to 255 CPUs) and other processor architectures, such as ARM or PowerPC.
穆恩德瑞将同一原理应用于具线性延伸或转动对称的三层状系统。
Mundry USES the same principle for three layered systems with linear expansion or rotational symmetry.
对直流系统开发了计及换相电压不对称的QSS换流器模型。
The QSS converter model in account of unsymmetric commutating voltages is developed for DC system.
本文讨论对称及广义对称非线性系统的可达性与可控性。
This paper discusses the reachability and the controllability of symmetric and generalized symmetric systems.
本文首先根据系统发生三相对称短路时的短路电流，给出了三相矩形母线短路电动力的解析表达式。
The expression for short-circuit electrodynamic force of rectangular bus bars on the basis of the calculation of three-phase symmetry short-circuit current was fi.
公开钥密码系统或非对称密码系统是实现和保障信息安全的一种重要方式。
The public key cryptosystem or the asymmetric cryptosystem is an important way to implement and ensure information security.
将对称密码算法和非对称密码算法共同使用，增强了应用系统的安全性。
Using the symmetric algorithms and the asymmetric algorithms together security performance of the application system is improved.
首先，建立了阀控非对称缸位置控制系统与力控制系统的数学模型。
At first, it studied the plant model of position and force system about valve control unsymmetrical hydraulic ram.
研究了多极透镜与旋转对称透镜组合系统的基本性质。
The elementary properties of the system combining a multipole len with a round len are studied.
在基于非对称加密系统中的RSA算法和MD 5报文摘要算法上，提出了一种基于IC卡的数字签名方案。
Based on RSA algorithm of unsymmetrical cryptographic system and MD5 message-digest algorithm, the paper presents a digital signature scheme based on IC card.
本文回顾了约束哈密顿系统的研究历史，介绍了约束哈密顿系统规范对称性的研究进展。
This thesis reviews the historic research in constrained Hamilton system and progresses of gauge symmetry in constrained Hamilton system.
使用长腿圆规或电子测量系统测量各对角的抬起点，然后比较其是否对称。
Measure pickup points diagonally using a beam compass or an electronic measuring system and compare the symmetry.
本程序应用多端口网络方程和故障端口边界方程联立求解的方法，计算电力系统各种多重故障及任意不对称运行的电压和电流。
In this program the voltage and current of simultaneous faults or unbalanced power system are calculated by solving the simultaneous equations of multi-port network and of the fault boundary.
本文对电力系统分析计算中的对称分量法进行了评述，并与相坐标法进行比较。
The widely used symmetrical coordinates method for power system analysis is reviewed and com-pared with the direct phase coordinates method.
内部控制评价对于改善信息不对称状况和促进内部控制系统的建立健全有着十分重要的意义。
Internal control evaluation has been the trend of economic development, and it is of great significance for the improvement of information asymmetry and perfection of internal control system.
在数字信号的处理中，先对称重信号进行FIR滤波，然后对信号进行分析、建模来得到动态称重系统的解决方案。
In the process of digital signal, let the signal through the FIR digital filter, then analyze and build models to get the solution for the dynamic weighing system.
建立了考虑转子转速的新的碰磨力模型，分析了具有初始弯曲和刚度不对称转子系统的碰磨响应，得到了系统参数对系统分叉和混沌响应的影响。
A new model of rub impact force considering varied rotating speed was derived and the rub impact response of a rotor system with initial bending and asymmetric stiffness was analyzed.
研究了对称组合系统的鲁棒输出调节问题。
The robust output regulator problem for symmetric composite systems was studied.
文章基于非对称加密系统中的RSA算法和MD 5报文摘要算法，提出了一种数字签名的实现方案。
Based on RSA algorithm of unsymmetrical cryptographic system and MD5message-digest algorithm, the paper presents an application scheme of digital signature.
不过，这种对称性对于噪声抑制没有意义，系统应当能在没有信号时也能抑制噪声的发生（侵入），事实上，这通常是系统测试所需要做的。
The system must reject noise even when there is no signal and, in fact, this is usually how system noise testing is done.
本文利用群论建立起一套分析对称结构系统的有力的计算方法。
In the paper using group theory a systematic and powerful computational methods are established to analyse symmetric structures.
研究有多余坐标完整系统的对称性与守恒量。
The unified symmetry and conserved quantity of the holonomic mechanical systems with remainder coordinates are studied.
研究有多余坐标完整系统的对称性与守恒量。
The unified symmetry and conserved quantity of the holonomic mechanical systems with remainder coordinates are studied.
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