热传导

So the heat could act on acupoint more effectively and better curative effect is achieved.

针身的热传导在组织内传热中发挥着重要的作用。

The plasma ignition threshold of metal is got through experimental and numerical study. The vapour and plasma ignition times of the target are got based on the equation of heat conduction and cascade model. We suppose that the plasma is ignited when generations of new electrons are born in vapour generation time. The influence of temperature on the thermodynamics and optics parameters of material also have been considered in the model. The resulting theory has good agreement with the experiment and overseas report. A blade method to measure the laser spot is given in this paper with validation and error analysis. The plasma threshold of metals in atmosphere and water ambients both are diagnosed with the light deflection and piezoelectric transducer. A Q-switched pulsed Nd:YAG laser operating at infrared (1064nm), visible(532nm) and ultraviolet (355nm) wavelengths has been used. Al、Fe、Cu are used as targets and get a similar results with both method. Theoretical and experimental analyses are applied on the influence of wavelength on the threshold have been done, both of which have shown that the plasma threshold of metals decrease as the laser wavelength increases; The plasma threshold of metals are higher in water than in air and the pressure of the shock wave in water is five times higher than in air .

从热传导方程和雪崩电离机制出发，假设当电子增值210倍时，考虑了温度对材料热力学和光学参数的影响时，得到了气化和等离子体点燃的时间，利用该模型进行计算得到的结果与国内外报道及自行通过实验测得的阈值基本一致；提出了利用刀刃法测量激光光斑面积的方法，并通过实验进行了验证和误差分析；利用光偏转装置和压电换能器分别对空气和水中金属等离子体点燃阈值进行了实验诊断，激光器均为调Q－YAG激光器（波长1064nm，532nm，355nm，脉宽10ns），靶材分别为Al、Fe和Cu，两种测试方法得到的等离子体点燃阈值基本一致；本文从实验和理论计算两个方面讨论了波长对等离子体点燃阈值的影响，均得到了等离子体点燃阈值随著波长的增加而减小的结论；对空气中和水中不同环境下金属等离子体的点燃阈值进行了比较研究，得到了金属在水中的等离子体点燃阈值比空气中的大，且水中产生的冲击波的压强是空气中的5倍左右的结论。

Copper is among nature's best conductors of heat.

铜是自然界中最好的热传导者。

In this research, digression of two types of sprayed fire-resistive material may use linear relationship for representing the thermal conductivity under changing temperature.

在本文中回归二类型被覆材料之热传导系数与温度变化，可以线性关系表示。

The men water temperature and pipework spacing can be varied to provide the required space temperature overcoming issues such as excessive heat loss or unfavourable floor finish ,and would have been carefully considered by the system designer.

现代地暖系统是将低温热水通入嵌在地板内的管道来工作的。被加热的地板向空间内辐射热量。热传导和对流只占其中很少的一个部分。系统散热量有以下几个因素所决定

Diamond has many outstanding physical, chemical, optical, mechanical, and electrical properties such as the highest thermal conductivity, the extreme chemical inertness, the highest known hardness, the lowest compressibility of known material, high in Young's modulus, low in friction coefficient, wide in band gap, and a wide optical transparency bandwidth.

中文摘要钻石拥有许多优异的物理、化学、光学、力学与电学特性，例如它拥有最高的热传导系数、具化学惰性、具有最高硬度、高杨氏系数与低摩擦系数、具有宽能隙与宽的光学穿透频域。

A series of tests were designed to obtain the simulation parameters: flow stress of AZ91D, friction factor and heat transfer coefficient.

为了获得精确的模拟参数，如AZ91D的流动应力，材料和模具之间的摩擦系数、热传导系数，设计了一系列的实验来测定它们，。

FLUENT is a state-of-the-art computer program for modeling fluid flow and heat transfer in complex geometries.

FLUENT是用于模拟具有复杂外形的流体流动以及热传导的计算机程序。

The mineral has some electrical and heat conductivity.

矿产有一些电器及热传导率。

On the other hand, the design optimization of heat conduction for engineering structures has wide range applications in practice.

本文主要研究了热传导—结构耦合系统的优化设计以及灵敏度分析的理论和数值方法，并且在大型有限元和结构优化软件系统JIFEX中成功实现相关的计算功能。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。