查询词典 mathematical model

A mathematical model is developed for the variation of different resistance with time in microfiltration and ultrafiltration.

本文还建立了能够较好地描述微滤和超滤分离过程中各种阻力随时间变化的数学模型。

On the base of knowledge on game theory,this paper established a mathematical model on players' unconstraint investment in public goods under the condition of complete information within enterprise.

本文以博弈论的理论为基础，建立了在完全信息下企业内部公共物品的自愿投资行为模型，并以此为背景分析了企业文化建设的问题。

The mathematical model of system is established on the basis of three-tank system material balance.According to nonlinear characteristics of three-tank level system,the controller is designed by using decoupling principle,which can make the nonlinear coupling of three-tank system uncouple into three first-order subsystems.

在三容系统物料平衡的基础上，建立了系统的数学模型，根据三容液位系统的非线性特性，运用解耦原理设计控制器，将三容系统的非线性耦合解耦为三个一阶子系统。

The mathematical model for undercarriage load simulation system of a certain airplane is established in this paper.

建立了某型飞机起落架负载模拟系统的数学模型，将起落架位置干扰量作为系统的不确定参数，设计了系统输出力矩跟踪空气动力载荷谱的非线性控制规律并进行了系统仿真。

This paper presents the mathematical model of optimum design of the undercarriage overall parameters of the elevated sprocket track-type bulldozer.

建立了高架链轮履带式推土机行走机构总体参数优化设计的数学模型，并以D7H为实例对其行走机构的总体参数进行了优化计算。

Based on a mathematical model assuming that dissociation of hydrate in the porous media takes place in constant temperature boundary condition, the analytical temperature distributions in dissociated and undissociated zones were solved, and thermal efficiency and energy efficiency were derived.

将多孔介质中天然气水合物在热力作用下的分解过程看作一个移动边界问题，在求解等温边界条件下水合物地层中分解区和未分解区温度场的基础上，推导出热力法开采水合物过程中开采热效率（用于水合物分解的热量与输入热量之比）和能量效率（开采所得甲烷气体的总热值与输入能量之比）的解析表达式。

A mathematical model of tension was established based on dynamic analysis of unwinding roll to solve the effect of unfitted tension to web material feeding. Factors influencing tension were analyzed.

为解决不适张力对带材供送的影响，通过放卷辊的动力学分析，建立了张力数学模型，分析了影响张力的因素。

Based on an unidimensional control mathematical model of infinite cylinder for thermal processing of ingots, a computer control system for optimizing heating of ingots in soaking pits has been developed, and an online optimizing control and management of processing in soaking pits have been realized in the blooming plant of Ma'anshan Iron and steel complex using CIM-PAC distributed control system provided by Action co., U.S.A.

1前言 现有的均热炉计算机控制系统大部分是以燃烧控制为主，即控制炉温、炉压和空燃比等热工参数。这种控制方法由于控制的目标是炉温而不是炉内加热的钢锭，因此，很难实现钢锭优化加热的目的。针对马钢初轧厂的实际生产情况，采用文献【l提供的钢锭一维无限长圆筒在线控制数学

Langmuir isothermal absorption equation for unimolecular layer was analyzed. Based on the data obtained from the isothermal absorption experiments for caramel and alkaline degradation products to glucose on fresh calcium phosphate precipitates in sugar solution with different mass concentrations, a mathematical model describing isothermal absorption for this kind of fresh solid phase in multi-component liquid phase was established by modern computer technology.

通过分析单分子层等温吸附Langmuir方程，以不同质量浓度蔗糖溶液中新生磷酸钙固相对焦糖、葡萄糖碱性降解物的等温吸附实验数据为基础，利用现代计算机技术建立了描述这类新生固相在多组分液相中的等温吸附过程的数学模型。

Based on the mathematical model of three phase PWM high frequency rectifier, the theory of dual-close-loop controller and implementation of unit power factor of the supply-side rectifier in the doubly-fed generating system are analyzed.

基于三相PWM高频整流器的数学模型，详细分析了双馈发电系统中电网侧整流器的双闭环控制原理和单位功率因数的实现方法。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。