查询词典 mathematical

Computable general equilibrium model A mathematical model developed by the World Bank to model national economies.

可计算的总体平衡模型世界银行开发的一项模拟国民经济的数学模型。

The objective of the program is to provide students with the capability to apply mathematical models and methods to study various problems that arise in industry and business, with an emphasis on developing computable solutions that can be implemented.

该计划的目的是让学生有能力运用数学模型和方法，研究各种问题，出现的行业和业务，对发展中国家是可以实现可计算的解决方案的重视。

It can describe the interaction between the arc and the gas flow adequately and may avoid the disadvantage of former mathematical models which used cold flow field as initiative computative condition.

它能充分反映气流场和电弧的相互作用，克服了以往的电弧数学模型以冷气流作为初始计算条件的不足。

The computerised test assesses verbal and mathematical dexterity and runs for 210 minutes (220 minutes with breaks).

这项计算机化考试测试的是考生的语文和数学能力，考试时间210分钟（加上休息时间总计220分钟）。

From the calendar reform of view, Xing Yunlu's work on the underlying mathematical principles of Shoushi Computus didn't go beyond the pattern of Chinese traditional calendrical astronomy, and he couldn't improve the precision of the Shoushi Computus.

从历法改革的角度来看，邢云路在立法原理方面的尝试并没有突破《授时历》的范式，对于历法推算精度的提高也没有产生实质性的影响，这为我们分析明末传统历法改革失败的原因提供了一个新的视角。

Xing Yunlu's GJLLK turns out to be the earliest work available now that incorporates in all mathematical rules underlying the computational algorithms of the shoushi Computus, which were thought to be the esoteric elements of the Shoushi Computus long lost in the Ming Dynasty.

对邢云路在《授时历》立法原理问题方面的工作进行讨论，指出：在明代传统历法发展长期停滞和《授时历》立法原理传承几乎完全中断的情况下，邢云路对这方面的知识进行了恢复。

Before discussing Xing Yunlu's calendrical work, we reviewed the calendrical system of the Ming Dynasty and the status of the calendar crisis and the endeavor of reviving the traditional calendar made by the scholars Gu Yingxiang (1483-1565), Tang Shunzhi (1507-1560) and Zhou Shuxue (?1500-?1572) during the Emperor Jia Jing (1522-1566) in the Ming Dynasty. These scholars had paid attention to the underlying mathematical principles of Shoushi Computus, especially the method on arc and arrow in the geometry.

在讨论邢云路的改历活动之前，首先对明代的历法系统以及传统历法出现危机的状况以及明代嘉靖年间顾应祥(1483-1565)、唐顺之(1507-1560)、周述学(约1500-约1572)等复兴传统历法的努力进行讨论，指出：明代嘉靖年间学者的改历理念主要是注重讨论被钦天监历官忽视的《授时历》的立法原理问题，并对《授时历》弧矢术做了一些有益的探求工作。

The background of its appearance is relatively simple, which is that merely from function graph studies, the importance of concavity can be drawn, but it is significant to be noted that the mathematical thought of the combination of figure and chart shown here is very important.

它提出的背景非常浅近，仅仅从函数图像的研究中就可获得凹凸性提出的必要性，但是此处所体现的数形结合的数学思想却是非常重要的。

In this mathematical model, we made the comprehensive consideration of the condensability of the liquid, the Westphal＇s effect, the continuous flow condition and the dynamic property of the ball valve.

应用数值方法建立了自动球阀运动规律的计算机仿真模型，通过数值模拟，得到各个参数对球阀运动动力特性影响的基本规律。

The design mainly works on many factors which effecting the volume efficiency of fracturing pump. These factors are working conditions of the pump,imbibitional valve,expulsive valve,clearance volume,sealing property, condensability of influent, liquid leakage and elastic defletion of pump cylinder. Based on these facors, we should induce the efficiency expression, famulate differential eguation and emulational mathematical model of fracturing pump.

本设计主要针对影响压裂泵容积效率的因素如：泵的工作情况、吸液阀结构参数、余隙容积、密封性能、液体的可压缩性、液体泄漏、泵缸的弹性形变等方面进行分析，在此基础上导出效率的表达式，建立微分方程，并建立压裂泵效率仿真的数学模型。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。