They often have interesting properties, such as poor heat conductivity (which makes them good insulators) and low friction (which makes them slippery).
它们拥有很有趣的特点，例如导热性差(可以做很好的隔热材料)，以及低阻力(意味着表面很滑)。
The experimental results show that the relative density, hardness, relative specific conductance and heat conductivity of the billets are increased with increasing percentage composition of Cu.
结果表明，随着铜含量的增加，热挤压坯料的相对密度增加，同时相对导电率、相对热导率和硬度值也提高。
The effect of Joule heat and mineral matter on conductivity of coal has been studied.
主要讨论了焦耳热效应和矿物质对煤导电性质的影响。
Roofing heat preservation material should be chosen, disrupting the apparent density is small, coefficient of thermal conductivity (small) materials.
屋面保温材料应选用孔隙多、表观密度小、导热系数(小)的材料。
In the field of thermology, diamond's heat-durability and heat conductivity were enhanced.
在热学方面，使金刚石的耐热性和导热性均有增加；
With preheating temperature enhancing, the peak value also increase, but cooling velocity decreases, resulting from the decrease of heat conductivity of sample lower surface.
随着预热温度的提高，电阻峰值也相应增大，但是样品下表面的热导出率下降，冷却速度下降；
Selection of high thermal conductivity of the heat sink material is very helpful to improve the efficiency of heat conduction.
散热片选用较高导热系数的材料对提高热传导效率很有帮助。
Copper and copper alloys are one of the most widely used metals due to their excellent electric conductivity, heat conductivity, and welding ability.
铜和铜合金具有优良的导电性、导热性和可焊性，是目前应用最广的金属材料之一。
From the results the author thought that due to the lack of high quality insulator with high heat conductivity.
经分析认为，由于缺乏高性能的导热绝缘材料，目前所制作的空心阴极的冷却效果不是很好。
Heat-transfer coefficient, heat resistivity, heat conductivity, heat exchanger, heating convection, heat conduction, heat radiation, heat convection exchange.
传热系数，热阻率，导热系数，换热器，热对流，热传导，热辐射，对流传热。
The usage of nonmetallic materials with low heat conductivity is beneficial to a better performance provided that only the axial heat conduction losses are considered.
仅从降低轴向导热损失的角度讲，使用低导热率的非金属材料制作制冷机部件对制冷性能有较大的积极作用。
Very high or very low heat conductivity.
非常高或非常低的热传导性。
Polystyrenc foam plank has been widely applied in different external insulation for outer-wall systems because of its thermal conductivity and good heat insulation function.
聚苯乙烯泡沫板由于热导率小、保温性能好，已经广泛应用于不同外墙外保温系统。
Rock wool carpet heat preservation is low thermal conductivity of a kind of high quality thermal insulation material.
岩棉保温毡是导热系数低的一种优质的保温隔热材料。
The effects of absorption coefficient, refractive index, heat conductivity, convective heat-transfer coefficient and radiative properties of the surf ace on the temperature field are discussed too.
物料加热表面受到对流冷却，并讨论了物料的吸收系数，折射率，导热系数，换热系数，物料表面辐射特性对温度场的影响。
This paper builds up the heat conveying model of the heat pipe screw, calculates its total conductivity and its heat conveying equation.
建立了热管式螺杆的热模型，计算出了热管式螺杆的总传导率，进而得出了热管式螺杆的传热方程。
This requires using materials with good heat conductivity.
这要求使用具有良好热导率的材料。
Aluminum core is 1050 pure series with excellent heat conductivity.
中间铝，为1050系列，导热性能好。
Calculation formulas of conductivity coefficient and specific heat were put forward by analyzing the heat physical characteristics of the new polymer mortar.
通过分析这种新型聚合物砂浆的热物理特性，提出了热传导系数和比热容的计算公式。
In heterogeneous anisotropic materials the heat flow vector and conductivity are more complex.
在各向异性的非均质材料中，热流向量和热导率很复杂。
This paper briefly introduces the performance requirements of the insulating materials such as the thermal conductivity, heat expansion coefficient, and density, etc.
简要介绍了保温隔热材料的性能要求（如导热系数、密度、膨胀系数等）、作用原理以及影响材料导热系数的主要因素。
Harder and more brittle than black silicon carbide, very sharp for grinding and of good heat conductivity.
硬度和脆性较黑碳化硅高、磨粒锋利、导热性好。
Experimentation for coefficient of thermal conductivity and specific volume heat of loess is explored first; and the experimental installation is installed.
首先探讨了黄土导热系数和比热容的测试方法，组装形成黄土土样试验装置。
Addition of steel bar can increase conductivity for heat, and reduce specific heat of concrete.
钢筋的加入可以提高混凝土的导热性能，减小混凝土的比热。
The optimization of heat conduction through rearranging the distribution of the thermal conductivity to realize heat conduction enhancement is studied in this paper.
本文讨论了通过重新布置场内的导热系数分布来强化热传导的导热优化问题。
By the way, for the case of variable density, specific heat as well as thermal conductivity, we have been successful to deduce other similar six heat transfer differential equations.
又对于变密度、变比热、变导热系数这样的更一般的情况也推立了六个二阶热传导的微分方程。
Sediment thermal conductivity is one of the important parameters for computing submarine heat flow.
沉积物热导率是计算海底热流的一个重要参数。
The feasibility of using quasi-steady state method for the measurements of effective thermal conductivity and specific heat of nanoparticle suspension is discussed theoretically and experimentally.
理论和实验分析了运用准稳态法测量纳米颗粒悬浮液有效导热系数和比热容等热物性的可行性。
With a high temperature, corrosion resistance, heat shock, low thermal conductivity, high electric insulating strength and high elastic modulus properties.
具有耐高温、耐腐蚀、耐热冲击、低导热系数、高电绝缘强度和高弹性模量等特性。
Moho depth within the crust and upper mantle, high conductivity layer depth and heat flow values have close relations.
通过对该区的研究发现，在地壳和上地幔中莫霍面埋深、高导层埋深和热流值之间存在着密切的联系。
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