查询词典 numerical key

Real time and multitask are the key technologies which are used in the Bending Machine numerical control system. The function of the real time and multitask would influence the stability and security and effectiveness of the whole system greatly.

其中，实时多任务技术是在拉弯机数控系统中用到的关键技术，实时多任务性能的优劣直接影响整个系统的运行的稳定性、安全性以及工作效率。

Mainly introducing the frame and advanced function of numerical control ECM machine tool with PLC and touch screen,the software ,the hardware and key technique in control system.

主要介绍采用可编程序控制器和触摸屏技术的数控电解加工机床的结构特点、控制系统的软、硬件结构及其关键技术，和机床的主要先进功能。

Quality function deployment and some methods of fuzzy mathematics and numerical analysis are mostly employed to explore and research key techniques on product level reuse. Some new concepts and models and algorithms are established.

主要采用质量功能配置、模糊数学和数值分析中的一些方法探索和研究了产品级再使用的关键技术，创立了一些新的概念、研究方法和技术路线。

The key idea is that the proposed numerical scheme involves the operator splitting technique, balance tensor diffusivity, Runge-Kutta time-stepping method, and a conjugate gradient iterative solver.

此法最主要的概念是使用一种分离的离散式、数值平衡扩散式、时间前进法及共轭梯度法来求解。

Stability, numerical dispersion and boundary condition are the several key problems in the seismic modeling.

稳定性，数值频散和边界是数值模拟中的关键性问题。

Key words:phase-change energy storage floor; hot water floor panel heating; numerical simulation

当供水温度为50～55℃时，条状相变蓄能地板表面温度达25～29℃，符合人体热舒适性的要求。

First of all, numerical simulation theory and key technology of powdered metal compacting are analyzed and discussed.

本文的主要内容如下：首先介绍了粉末成形数值模拟理论及关键技术。

The anode structure of CI-LIGBT is optimized by numerical simulation, and it is pointed out that segmented p〓 anode region surrounded by n〓 anode region is the key to improve the ability of current limiting, and the more deeper the n〓 anode junction relative to the p〓 anode junction, the more powerful the ability of current limiting is. The affection of the breakdown voltage BV〓 of the reverse biased p〓n〓 junction and the sample resistance upon the latching current, the latching voltage and the on-state voltage have been studied, and it is indicated that the tradeoff between the on-state voltage and the latching characteristics is the excellentest when BV〓 is 1. 1V so that its on-state voltage can be just only 0.6V higher than conventional LIGBT. It is also found that this device is especially suit to high temperature environment. Based on X. B. Chen's surface voltage sustaining structure using optimized variational lateral doping and Ludikhuize's multiple floating rings structure, high voltage LIGBT and is studied in this paper.

通过数值模拟，优化了CI-LIGBT的阳极区结构，指出采用被n〓阳极区包围的单元状p〓阳极区是提高该器件限流能力的关键，而n〓阳极区结深相对p〓阳极区结深越大，器件的限流能力越强；分析了反偏p〓n〓结击穿电压BV〓和取样电阻对器件闩锁电压、闩锁电流和导通压降的影响，得出BV〓在1.1V时器件导通压降和抗闩锁能力间的折衷关系最优，其导通压降仅比普通LIGBT高0.6V；分析了温度对LIGBT闩锁性能的影响，表明CI-LIGBT即使在450K的高温下也不会闩锁，尤其适用于高温工作环境。

At first, on the basis of the combination research methods of analytical theory, numerical simulation and experiment, the mathematical and physical model of certain-length rolling process have been established. Then according to the established model, the menstruation of rolling average friction coefficient is proposed; and then the certain-length rolling process and key parameters are determined.

采用理论研究、数值模拟和实验研究相结合的研究方法，建立定长轧制物理模型和数学模型；基于所建模型，提出了一种测定轧制平均摩擦系数的方法；确定了定长轧制工艺方法和关键参数；分析了影响制件轧制长度的因素；对关键参数进行了数值模拟。

The thesis is about numerical simulation of the subtask of the study and application of a new cement"s production process in plateau, which is based on an "863 project of Industrialization and Key Preparation Technology of Low Environmental Impact Cement.

本文研究为国家高技术研究(863计划)项目"低环境负荷型水泥及胶凝材料关键制备技术"(No.2002AA335050)的子课题"高原型新型干法水泥生产工艺特性的研究与应用"中的数值模拟部分。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。