查询词典 mathematical

This text utilizes the stability theory of differential equation, establishes the mathematical model of praying on the relation among the living beings, then according to the characteristic of differential equation group set up, through analyze to its equalization point,discuss the rail line distribution situation and overall stability, studies the dynamic change situation of every species during sufficient long time slot.

摘要本文利用微分方程稳定性理论，建立生物间捕食关系的数学模型，然后根据建立的微分方程组的特性，通过对其平衡点分析，轨线分布情况以及全局稳定性的讨论，研究出各物种在充分长时间段中的动态变化情况。

Using the sectional force and torque balance method to consider the effects of load force and temperature,provides a more completeness and systematic mathematical model.The working characteristic of bimetal strip is expressed by equivalent network.

采用综合考虑负载作用力及温度影响的分析条形双金属片的截面力－力矩平衡法，给出了较完整系统的数学模型；将双金属片用等效网络表示，用网络分析手段求解温度继电器、热继电器的工作参数；分析了在比弯曲最大的条件下各层界面、表面应力关系。

We derived an analytical expression of ion concentration distribution and the mathematical model of the induced polarization potential and the spontaneous potential for water bearing shaly sandstone from the conservation law of charge and the conservation law of matter.

由电荷守恒定律和物质守恒定律，推导出毛管中离子浓度分布的解析表达式，建立了描述含水泥质砂岩激发极化电位和自然电位的数学模型。

Combined with experimental results and results of theoretical calculation, by means of mathematical analysis, the charge distribution in a flat double layer is investigated.

结合实验测试结果和理论计算结果，通过数学分析探讨了平板双电层中的电荷分布描述问题，考虑介电常数的变化情况将更好地表示实际的双电层电荷分布。

According to conservation of mass, this article establishes a kind of mathematical model for the equation equilibrium of chemical reaction, and also gives its solution both by man and by computer.

本文根据质量守恒定律建立了一种配平化学反应方程式的数学模型，并给出了模型的人工解法和计算机解法。

According to conservation of Mmass,the article establishes a mathematical model for the equation equilibrium of chemical reaction,and gives its solution both by man and by computer.

本文根据质量守恒定律建立了配平化学反应方程式的数学模型，并给出了模型的人工解法和计算机解法。

Considering all the possible reaction products, a chemical reaction equation was established and a mathematical model of formulation design was obtained.

论述了混合炸药配方设计的基本思想，对含金属混合炸药，在考虑所有可能生成产物的情况下，给出爆炸反应方程式，得到了其配方设计的数学模型。

In this study, a mathematical programming approach for synthesis of water network with energy integration in chemical plants is developed.

本研究针对工厂中需考虑操作温度的用水网路设计提供了一个数学方法，同时考虑了满足所有制程用水单元需求的最适化水网路设计，以及最适化的热交换网路设计。

The function of the addition of co-substrate ethanol was to in-situ regenerate NADH. A mathematical model was derived, in which, two substrates were catalytically reacted in sequence. The model was applied to the system involving the reduction of 2'-chloroacetophenone to R-2'-chloro-1-phenyl-ethanol by S.

深入研究了在乙醇存在下生物还原过程中酵母细胞内NADH、NAD〓、NADPH及NADP〓浓度的变化规律，发现胞内NADPH浓度迅速降低到零，而NADH浓度始终维持在较高水平，证明了用于底物还原反应的辅酶是NADH，辅助底物乙醇的加入有利于实现辅酶Ⅰ的原位再生。

For confirming the method's efficiency, the turn-off transient mathematical model based on the chopper circuit is developed according to the proposed mathematic model of the turn-off transient current through IGCT, in which the RC-snubbers of IGCT, the stray inductance of chopper circuit and DC-link choke are taken into accounts.

该文建立基于斩波电路的IGCT关断暂态特性的数学模型。该模型充分考虑IGCT阻容吸收回路、线路杂散电感及限流电抗器对IGCT关断暂态过电压的影响。

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。