查询词典 systems engineering

Braking system can be divided into human and braking systems, brake systems and power brake servo systems.

制动系统可分为人力制动系统、动力制动系统和伺服制动系统等。

In order to investigate the relationship of solubility between vanadium and the other co-existing ion in soil. The phase equilibria of the quinary systemNaVO_3 + KVO_3 + NaH_2PO_4 + KH_2PO_4 +(NH_2)_2CO + H_2O and its five quaternary sub-systems were studied at 298K with isothermal dissoluble method. According to the reference, all these systems are not reported yet. The solubilities and the physico-chemical properties such as density, conductivity, pH value and refractive index of the equilibrium solutions were determined. Based on the determined values, the solubility stereo-diagram and projected-diagram( saturated with KVO3), projected-diagramsaturated with (NH_2_2CO, and water content diagram of the quinary system, isothermal solubility diagrams of the quaternary sub-systems, and the physico-chemical properties-composition diagrams of the equilibrium solutions were plotted.

为探明土壤中钒的溶解性同土壤中主要共存离子间的关系，本论文采用等温溶解平衡法研究了文献中还未见报道的五元体系NaVO_3+KVO_3+NaH_2PO_4+KH_2PO_4+(NH_2)_2CO+H_2O及其五个四元子体系298K相平衡关系，测定了这些体系298K时各组分的溶解度及平衡液相的密度、电导率、pH值和折光率等物化性质，并绘制了五元体系溶解度空间立体图，以KVO_3为饱和的投影图，以(NH_2)_2CO为饱和的投影图、水图及四元子体系的溶解度等温图、水图和平衡液相物化性质一组成图。

In the last chapter, by introducing the isochronous center of real systems into complex planar and defining complex center and complex isochronous center, a concise linear recursion formula for period constants is given, necessary and sufficient conditions of complex isochronous center (the Time-Angle Difference Theorem) proved, conditions of real systems with linearizable center and saddle treated unitedly and the isochronous center conditions discussed fully for a class of real planar cubic systems.

在第七章，通过把实系统等时中心引入复平面研究，定义了复中心和复等时中心，给出了等时中心周期常数计算的简明的线性递推公式，证明了等时中心判定的充分必要条件，统一地处理了实系统具有可线性化的中心和鞍点条件，并对一类实平面三次系统的等时中心条件进行了完整研究。

It is shown that two-component Wadati-Konno-Ichikawa equation, i.e. a generalization of the wellknown WKI equation is obtained from the motion of space curves in Euclidean geometry, and it is exactly a system for the graph of the curves when the curve motion is governed by the two-component modified Korteweg-de Vries flow. At the same time, a n-component generalization to the WKI equation is obtained. Also, starting from the motion of curves, mKdV and its symmetry recursion operator is exhibited explicitly; two- and n-component mKdV systems are obtained. It is shown that WKI systems are gauge equivalent to mKdV systems. The two-component WKI equation admits an infinity number of conservation laws and a recursion formula for the conserved densities is given by considering an eigenvalue problem together with introducing an appropriate transformation.

在二维和三维欧氏空间上，我们从空间曲线运动出发，推导出了mKdV方程以及它的用以生成高阶对称的递归算子；推导出了多元mKdV方程以及二元和多元WKI方程，并证明了WKI系统和mKdV系统的规范等价性；尔后，通过考虑特征值问题，并引入一个恰当变换，给出了二元WKI方程的用以计算无穷多守恒密度的递归公式，从而证明了二元WKI方程的守恒可积性；系统地分析了两种mKdV方程的Painleve性质，并分别给出了两种不同形式的二元和n元mKdV方程的共振点出现的规律。

As many systems with reduced relative degree can be transformed into nonlinear cascade systems, much research attention has been focused on such systems.

由于很多具有降相对阶的非线性系统可以转化为非线性级联系统，其特性得到了广泛研究。

In this paper,we define the oriented relevance information among attributes of information and decision systems,which measures the relevance among attributes of information and decision systems. And based on these definitions, we present a new discriminant theorem of knowledge reduction of information systems.

本文定义了信息系统以及目标信息系统属性之间的有向关联信息，用来度量信息系统以及目标信息系统属性之间的关联程度，基于此给出信息系统以及目标信息系统的知识约简一种新的判定定理。

Easy5 provides accurate, sure multi-domain moulding and model of impulsive fleshly systems. Using Easy5, whatever of the most reputable companies in the concern are evaluating grouping take action with CAE to turn fleshly prototypes, revilement cost, and qualify their creation utilization process.Dynamic systems, those systems whose activity as a duty of instance is important, are typically circumscribed using first-order figuring equations.

MSC Easy5诞生于波音公司，是由各学科领域富有经验的工程师和数值计算专家根据实际的工程问题和需求合作开发的，经过近30年的不断积累和大量工程问题的检验，发展成为独一无二的控制与多学科动态系统仿真分析工具，可谓波音公司工程仿真经验的结晶，被广泛应用于航空航天、国防、汽车、工程设备、重型机械等工业领域。

In the chapter three, by using the comparison principle and frequency domain method of the discrete systems with time-delay, combining Rouche Theorem, sufficient criterions for the stabilization of the neutral type discrete control systems with multiple time-delay and the neutral type interval coefficient discrete control systems with multiple time-delay are obtained by choosing appropriate feedback controller.

在第三章，利用时滞离散系统的比较原理与时域法，结合复变函数理论中的路歇定理，通过选取适当的反馈控制律，得到了多组时滞中立型线性定常离散控制系统和多组时滞中立型区间系数线性定常离散控制系统的无条件镇定的充分性准则。

About Saft Power Systems Worldwide Saft Power Systems is a power supply provider offering one of the world's most comprehensive portfolios of premium power supply systems and solutions.

关于帅伏特集团帅伏特电源系统集团是世界范围最大的内提供最全面，最广泛的优质电源及解决方案的跨国公司。

This Agreement provides that Paul Mueller Company will be Sartorius Stedim Biotech's exclusive North American partner and supplier of stainless steel systems, such as fermentors, bioreactors, freeze-thaw systems and crossflow and other filtration systems.

本协定的规定，保罗穆勒公司将赛多利斯Stedim生物技术的独家北美合作伙伴和供应商的不锈钢系统，如fermentors ，生物反应器，冻融系统和横向和其他过滤系统。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。