查询词典 conduction

Based on the exergy transfer equations, exergy transferring in the steady heat conduction process are calculated for the infinite plate at the first type boundary condition, and two results are compared when conductivity is stable and changed with temperature in this paper.

利用一维稳态传递方程，对平壁在第一类边界条件下的一维稳态导热过程的传递做了数值计算，并就导热系数为定值与变值的两种计算结果进行了比较。

Studied present measuring methods" advantages and disadvantages, and presented the necessity and importance of researching propellant transient heat transfer.2.according to 130 and aeronautic 90 rocket projectiles" structure, analysed and acquired physical and mathematical models for propellant transient heat transfer, also designed propellant temperature field simulation units for test.3.acquired discrete transient heat balance equation and temperature calculation program, and gave contrasting curves between experimental temperature values and program calculating temperature values as well as maximum errors and average square root errors between them.4.by programs based on the first class boundary condition, worked out temperature distribution in propellant temperature field simulation units at different time, analysed temperature field distribution law and main elements affecting heat transfer, acquired propellant mass weighted average temperature and one at the half position of propellant maximum thickness as well as maximum errors and average square root errors between them.5.established transient heat transfer mathematical model and temperature calculation program for the third class boundary condition, drew contrasting curves between temperature experimental values and calculation values and gave maximum errors and average square root errors between them, got temperature distribution in the simulation unit at different time and main elements affecting heat conduction, figured out propellant mass weighted average temperature and one at the half position of propellant maximum thickness as well as maximum errors and average square root errors between them.

分析了现有测试方法的优缺点，提出了研究推进剂瞬态导热的必要性和重要性。 2。根据130和航90两种火箭弹的结构，分析得到了推进剂传热的物理模型和数学模型，设计了推进剂温度场模拟实验装置。 3。得到了离散形式的瞬态热平衡方程和温度场计算程序，给出了实验温度与程序计算温度值的对比曲线及其最大偏差与均方差。 4。利用程序求出了第一类边界条件下、不同时刻推进剂温度场模拟装置中的温度分布，分析了温度场的分布规律和影响传热的主要因素，求出了推进剂质量加权平均温度和最大肉厚1／2处的温度时间曲线并给出了两者之间的最大偏差与均方差。 5。建立了第三类边界条件下的瞬态导热数学模型和温度计算程序，求出了温度实测值与计算值的对比曲线并给出了两者之间的最大偏差与均方差，得到了不同时刻温度场模拟装置的温度分布与影响导热的主要因素，求出了推进剂质量加权平均温度和最大肉厚1／2处温度及两者之间的最大偏差与均方差，讨论并确定了能代表130和航90推进剂温度的特征点的位置。

In this paper ,we describe in detail the basis theory of wavelet and study the applications of wavelet in the first kind singular integral equation and inverse heat conduction problems .

本文详细阐述了小波理论的基本知识，研究了小波在第一类奇异积分方程和逆热传导方程中的应用。

The ice flaker evaporator processed from special alloy with lightness and high heat conduction efficient approximating that of Aluminum.

l 高热导系数的合金材料，几可达到铝的传热效能

Wealth the effect has three kinds conduction channels: By affecting immediate consumption coming affecting the disposable income holding share person,the income changing a resident expects to draw coming to affect a consumer demand bound consumption inclination, and supplies with effect soft and floury by way of.

财富效应具有三种传导渠道：通过影响持股者的可支配收入来影响即期消费，改变居民的收入预期和边际消费倾向来影响消费需求，以及经由供给面的影响。

Methods:The adrenergic fibers in adult cardiac conduction system of 10 normal cases was demonstrated under fluoroscope.

采用荧光显微镜下观察10例成人心脏传导系统中的肾上腺素能神经纤维。

The fluorspar corresponds the sixth turn of - glabella wheel, theposition between two eyebrows third region, the corresponding colorfor not anxiously not Xu's purple blue color (red with blue colorunion, plays water color people all to know, but red representativewarm), third is the spiritual strength and the higher intuitioncenter, by way of a glabella turn of strength, can receive theguidance, and then the conduction sense knows to is higher oneself,lets the person experience the heart 电感应, patrols the universeand to the previous generation cognition.

萤石对应第六轮－眉心轮，位置於两眉之间的第三眼地带，对应色彩为不急不徐的紫蓝色(红色与蓝色的结合，玩过水彩的人都知道，而红色代表温暖)，第三眼是精神力量和更高直觉的中心，经由眉心轮的力量，能接收引导，并进而传导觉知至更高的自我，让人体验心电感应，神游太虚及对前世的认知。

And a two step follower boost circuit to reduce PFC output voltage which will reduce power losses of the switching loss and conduction loss during loads of light load and typical load.

同时使用阶式输出电压方式低主动修正电的输出电压，以减少当输出负载为轻载(20%)及中载(50%)的时的换

The gap closure of BNNTs under transverse electric field may be related to the nearly free electron state in conduction band.

硼氮纳米管在电场下明显的带隙降低现象可能和其导带底附近的近自由电子态有关。

In this paper, a three-dimensional diagram of frequency impedance characteristic considering the variation of the conduction angle is obtained.

基于IEEE第一基准模型的数字仿真分析验证了频率阻抗计算方法和结果的正确性，深入阐明了TCSC抑制SSR的物理机理以及要实现完全抑制SSR需满足的工作条件。

The statistical analysis of this large set of mutations has led us to propose a diagnostic strategy that should help with the molecular work-up of optic neuropathies.

这一大系列基因突变的统计学分析引导我们提出一个诊断策略，可以帮助我们对视神经病变进行分子学的诊断检查。

The results show that the pipe grouting changes the mechanical parameters of surrounding rocks to achieve the security of engineering objectives by reinforcing surrounding rocks and bolcking the water.

研究表明：小导管注浆一方面改变了围岩的力学参数，另一方面利用浆液的固结特性可以实现堵水和加固围岩的工程目标，使隧道在开挖过程中的安全得到保障。