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A mathematical formula, called a hashing function, is used to produce a unique number that will identify the record's physical location on the disk.

所谓的杂凑函数，是用来制造了一个独特的识别号码，将记录的物理位置在磁盘上。

Two-dimensional "different dollar" and "four-color conjecture"(5)- Mathematics - Mathematical Physics Mechanics World Health ...

二维的"相异元数"与"四色猜想"-数学-数学物理力学天地生。。。

Based on the theory of heat conduction a strict mathematical method is used. In the paper, error analysis for different heat exchange coefficients is made.

在设计和运行中，正确地分析转子温度和应力的变化规律，对于实现机组的安全经济运行具有重要的意义。

The flow resistance and heat transfer characters of POS in pipe is studied by experimental and mathematical method.

研究的结论为油焦浆用作锅炉燃料提供了具有指导意义的理论基础。

Furthermore, an analysis of simplifying the solution regeneration system's mathematical model which had inner heat reservoir was done. The calculative result was reached.

另外，本文对带有内热源的溶液再生系统进行了简化代数模型分析，给出了计算结果。

High freezing point oil reservoir ; in_situ heat fracturing treatment ; wellbore temperature profile ; heat balance equation ; mathematical model

高凝油油藏；自生热压裂技术；井筒温度场；热平衡方程；数学模型

In this paper the optimum design of district heating systems in a cogeneration plant is studied comprehensively by use of mathematical programming.

本文应用数学规划方法对热电厂区域供暖系统的最优化设计进行了较为全面的研究，在此基础上提出了确定区域供暖距离的方法。

The actual character of heating system was considered of when these mathematical modeling set up, all these math modeling is very useful to exploit the software about general calculation and heat economic analysis of coal power plant heating system.

论文围绕着火电厂热力系统的通用数学建模、机组的热经济性分析模型以及相关软件的开发等问题展开以下几方面的研究：火电厂热力系统热经济性计算是设计热力系统、分析和指导已有电厂安全经济运行的基本手段。

This study firstly based on Kubelka-Munk law, and adopted the method of three stimulate value match, then established mathematical model of hectograph special color printing ink that was about tricolor ink. Moreover it presented calculation method of parameter that was necessary to answer model.

本论文首先以库贝卡--芒克定律为基础，采用三刺激值相匹配的方法，建立了以三原色油墨为基本配色墨的胶版印刷专色油墨的配色数学模型，并给出了配色模型所需参数的求解方法。

To simplified the designing, diagram presentation, construction and profile of helicoidal stair, the formation of helicoid is analyzed, and it′s mathematical model is studied.

为简化旋转楼梯的设计、图示、施工及剖面形状，对螺旋面的形成进行了分析，建立了螺旋面的数学模型。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。