模型工

AHP; judgment matrix; verification of consistency; mathematical modeling; government officers; distribution model; milkmen; estimation model

关键字或关键词组：层次分析法；判断矩阵；一致性检验；数学建模；公务员；分配模型；送奶工；评价模型

By using the said model, the mass flow of flue gas and steam can be calculated on the basis of temperature and pressure concerning the working medium at inlet and outlet of the boiler's heating surface, and the variated amount of the heating surface's thermal resistance can be calculated without using structural parameters of the heating surface.

由于简单换热器模型能够根据锅炉受热面进、出口处工质的温度和压力，计算烟气和汽的质量流量；可以不使用受热面的结构参数，计算受热面导热热阻的变化量。所以，采用该模型开发电站锅炉吹灰优化控制系统，能够解决传统方式存在的流量计算精度低、污垢热阻计算不准确等问题。

The real shape of U tube was considered, and heat transfer model of underground vertical buried tube heat exchanger was built with math methods and numerical analysis software. The soil temperature distributions around the buried tube under different working conditions were solved by programming.

考虑U型管的实际形状，借助数学方法和数值分析软件，建立了地下垂直埋管换热器传热模型，并通过编程求解数学模型，得到了系统短期运行不同工况下埋管周围土壤的温度场分布情况。

In the paper, the simulation model of port plate/cylinder block frictional pair in which the lubricating film forms was established according to force balance equation and flow continuity equation with SIMULINK of MATLAB. The frictional pair includes of damp groove type continuous oil supply port plate /cylinder block frictional pair and semi-perimeter double oil groove type periodical oil supply port plate /cylinder block frictional pair.

本文根据配流副数学模型中的力平衡动态方程和流量连续方程，利用数学仿真软件MATLAB中的SIMULINK工具包分别对阻尼槽型连续供油配流副和半周槽双油腔间歇供油配流副建立了润滑膜形成的仿真模型，并对不同工况下的这两种配流副润滑膜的形成及变化规律进行动态仿真研究。

This article according to the actual application of Rapid-drop gate, meanwhile combine the entire characteristics test of pump model which was developed on the high accuracy pump model test platform of the south-to-north water transferring project water the model, mainly includes the water pump operating mode, the water pump applies the brake the operating mode and the hydraulic turbine operating mode, take a runner as the object, makes 3 to place the angle to 5 leaf blades the entire characteristics test.

本文根据快速闸门的实际运用情况，同时结合了高精度南水北调工程水泵模型同台测试试验台上开展的模型泵全特性试验，试验主要包括水泵工况、水泵制动工况和水轮机工况，以一个转轮为对象，做3至5个叶片安放角度的全特性试验。

In consideration of those mentioned above, a distributed-parameter dynamic mathematical model of the utility boiler furnace and working fluid in the tube is developed in this paper.

鉴于上述情况，本文建立了一套用于电站锅炉炉膛和管内工质的分布参数动态数学模型，模型能够深入、全面地从机理上反映模拟对象的动态特性。

A one-dimensional dynamic model is developed for the working fluid in the boiler tube, it is convenient to be connected with furnace model, in order to simulate the dynamic differences of the in-tube working fluid at different positions of the furnace.

在建立的管内工质动态模型中考虑了两相区内汽水之间的相对滑移，以及流体动量沿流程、随时间的变化对动态特性的影响；对过冷区、饱和区和过热区都采用了分布参数模型。

Design and make tubular-support and columns-support lucite silo models as well as rubber cushion imitating elastic foundation. Make static and dynamic experiments on elastic and rigid foundations under several kinds of working condition and correct the experiment condition according to FEM calculating result and re-experiment.

自行设计并自制了筒承式和柱承式有机玻璃筒仓模型及弹性地基的模型—海绵橡胶基，进行了在刚性及弹性地基上多种工况的静、动力实验并根据计算结果对实验条件进行修正后再次试验。

ChapterⅢ,system model of chapter II was simplified as the free vibrationmodel of the system to solve the inherent vibration frequency and vibration mode.The inherent vibration modes are divided into three categories:torsional vibrationmode of central component,translational and torsion pendulum vibration mode of thecenter component and planetary gear vibration mode.

第三章对第二章建立的系统模型简化为自由振动模型，求解了系统的固有振动频率及振型，将各工况下的固有振型分为三类：中心构件扭转振动模式、中心构件平移扭摆振动模式和行星轮振动模式。

Based on a FE model of a three-span continuous rigid frame bridge, the updating effects of the three techniques have been evaluated when different model information, different structural parameters and different level of noise are considered.

基于一座三跨刚构－连续梁桥有限元模型，通过七种不同工况的模型修正计算，研究了这三种方法在不同模态信息量、不同误差参数以及不同噪声水平下的修正效果。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。