查询词典 systems engineering

Based on minimum resolvable temperature difference channel width of thermal imaging systems and modulating transfer function channel width of photoelectronic imaging systems, a comparative research between the evaluation methods for the general performance of thermal imaging systems is studied through simulation and experiments for an actual thermal imaging system. Good agreement was drawn between the two methods for the general performance valuation of thermal imaging systems.

在最小可分率温差信道宽度的热成像和调制传递函数信道宽度的光电成像系统性能评价方法的基础上，通过实际热成像系统性能的理论模拟和实际观测试验，对比分析了两种方法对于评价热成像系统综合性能的一致性及系统主要参数变化对匹配效率的影响。

At the same time, the characteristic equations of the controlled systems with time delays are transcendental equations and belong to infinite dimensional systems, so it is difficult to study the time delay systems in mathematics theory and also difficult to obtain good performance for the time delay systems using the controller designed by classical control theory.

同时，由于含有时滞的控制系统的特征方程是超越方程，属于无穷维系统，对时滞系统的研究在数学理论上是非常困难的，有很高的理论价值，而且通过经典控制理论设计出来的控制器对时滞系统很难得到良好的控制效果。

Firstly this paper introduces some basic information about the determination of satellite orbit, including time systems, coordinate systems, the definition of these systems and the transfer between different systems.

文中首先介绍了卫星定轨的一些基础知识，主要包括时间系统、坐标系统的定义和不同系统之间的转换关系。

Presents the design of heating ventilating and air conditioning systems in which low temperature hot water floor panel heating systems in winter,variable refrigerant volume split air conditioning systems in summer,and central ventilation systems through all-year are adopted.

介绍了该工程的供暖系统、空调系统及通风系统的设计。冬季采用低温热水地板辐射供暖，夏季采用变制冷剂流量多联分体式空调系统供冷，全年采用集中新风系统供给新风。

Floor heating systems have been used since ancient times due to their advantages over other heating systems. Previous studies are mainly on the floor heating systems using hot water. There is insufficient study, to the author's knowledge, about floor heating systems using electric heating cords. In the thesis, the heat-transfer characteristics and comfort for the floor heating system and ceiling panel heating system using electric heating cords were investigated.

地板辐射采暖系统与其它采暖方式相比，因许多优点它已有多年的使用和发展历史，在相关研究文献中，大都采用低温热水地板辐射采暖为研究对象，相对而言，电热地板辐射采暖系统的研究文献比较欠缺，为此，本文研究了电热地板辐射采暖和顶棚辐射采暖两种形式下的传热特性和室内热舒适性。

Based on the information-scheduling models and time-delay models of networked control system, state-estimate-based and parity-relation-based fault diagnosis approaches and passive fault-tolerant control such as integrity control for networked control systems are presented; 2 we presented new models, Quasi T-S models, for linear and nonlinear networked control systems with random time delays, and the corresponding fault diagnosis and fault-tolerant control approaches; 3 With all these fault diagnosis theory presented, active fault tolerant control approaches are developed directly for networked control systems; 4 Some analysis, design and optimization theory for networked control systems are presented., such as robust control, LQ guaranteed cost control, modeling and control for stochastic networked control and integrated optimization etc.

给出了诸如网络化控制系统的鲁棒控制、LQ保成本控制、联合优化设计、随机网络化控制系统的建模与控制等方面的结果。

Solubilities and physico-chemical properties in the solution of these systems were determined. According to the experimental data, equilibria phase diagrams and physico-chemical property -composition diagrams of ternary systems were plotted; Equilibrium phase diagrams and corresponding water content diagrams of quaternary systems were finished; Stable and metastable phase diagrams, corresponding water content diagrams of the quinary systems at 288K (saturated with Li2CO3) were also plotted.

测定了上述各体系288K平衡液相中各组份的溶解度及主要物化性质；绘制了三元子体系的相图，物化性质—组成图；绘制了四元子体系的干盐图及相应的水图；完成了该五元体系稳定及介稳平衡体系为Li_2CO_3饱和的投影相图，水含量图。

The more than 700 employees of the FAM Group combine the know-how for bulk materials handling, mining systems, stockyard systems, mineral processing, loading systems, conveying systems, port technology and unit loads handling.

FAM集团拥有在散状物料输送系统、采矿系统、堆料系统、物料处理系统、装卸系统、输送系统、港口系统及装车站等方面的技术优势。

This condition is weaker than the conditon for complete topological conjugacy of two families of systems, so it is significant and useful for deducing from relatively simple systems or systems with known bifurcation points to the systems with unknown bifurcation points.

这一条件比两族系统完全拓扑共轭弱，因此是有理论意义的，可以使我们从相对较简单的或已知分支点状况的系统来推知未知系统的分支点。

The attackers use the night-time window to install backdoors on the systems that are still present after the systems are hardened and are used for exfiltration of sensitive data from compromised systems and from other systems connected to it.

攻击者就是利用相差一晚的时间窗，在新系统上安装后门；这些后门即使该系统已经淬火后才存在，且会从受害系统、以及与受害系统相联的系统上抽取敏感数据。

Objective:To explore the feasibility of laparoscopy in diagnosing and treating of abdominal diseases.

目的：探讨腹腔镜用以诊断腹部外科疾病及选择治疗方案的可行性。

The lifetime of nylon 1010 and nylon 1010/POSS composites decreased with increasing temperature.

热重-红外联用分析表明尼龙1010在氮气气氛下的降解产物主要为小分子的低聚物，POSS并不改变尼龙1010降解产物的组成。