温度系数

In cards and membership cards make not only to measure filmogen of frictioncoefficient at room temperature, but also research in the field of frictioncoefficient at ambient temperatures.

在制卡和会员卡制作后不仅给丈量薄膜质料在常温下的摩擦系数，还答查究在本质搁置境况温度下的摩擦系数。

Through designing of composition and structure of the bioactive graded coating,innerstress and its distribution in the coating were analyzed and calculated, the resultsshowed that when composition distribution coefficient n was 1.5, a reasonable stressdistribution could be got, that was at the beginning of deposition the suspension containingrichly BG granules was used so that a rich BG granules layer, a good transitional layerbetween BG layer at the bottom and the coating could be obtained at the titanium alloy side,the bottom of the coating; the stress value near the interface and surface and its character,pressure stress or tensile stress, were decided by the character of its composition itself.Changing composition distribution coefficient n could only change the variation tendency ofstress in the coating, but did not change the stress distribution rule in the coating. Thethinner the coating is, the sharper stress variation in the coating is, which does not mean thatthicker coating is better because the thicker the coating is, the little the permitteddeformation of coating is, so the coating thickness should be thinner, for example, about50μm for bending applications, but for applications only bearing pure shear stress, such asroot of tooth implant, the coating can be thicker little, for instance, about 80～100μm. The study on electrification characteristic and electrophoresis deposition of HAand BG granules in aqueous and non-aqueous solution system found that EPD almost didn'toccur in aqueous solution system. However, because HA granules take position charges inabsolute alcohol, a homogeneous EPD be carried out on the cathode titanium alloy slice, but taking negative charge in absolute alcohol the BG granules not be deposited on the cathode. A guided HA crystallizing, 100～300nm, on surface of the BG granules be realized by metathetical reaction, which cover BG granules with HA microcrystals and make the covered BG granules taking position charges in absolute alcohol, sequentially realize the EPCD of the BG and HA granules on the cathode, so it is feasible to make a titanium alloy/BG/HA bioactive graded coating by making use of EPCD technology. The corrosion experiment of rich boron bioglass coating and plasma spray coating showed that split phase, rich boron and rich silicon phase, occurred during its preparation. In basic medium the corrosion behavior of 〓 BG coating showed uniformity corrosion, the corrosion mostly occurred at rich boron phase area, therefore batch formula design of BGshould avoid the occurring of split phase. The corrosion appearance of plasma spray coatingappeared a non-uniform corrosion, mostly occurred at the edge of the laminated HA moltendrops, and emerged an accelerated corrosion tendency, which will easyly lead to corrosioncrackles extending to the interface and the happening of osmotic interfacial corrosion, thatmay be one of the major reasons leading to the coating cracking-off in the later period. Thetesting results of thermal expansion coefficient of 〓 and 〓BG showed the thermalexpansion coefficient of 〓 BG matched with that of titanium alloy better, and 〓 BG couldsinter with titanium alloy into densification enamel layer at low temperature (720℃).

将Ti6Al4V合金在1000℃下进行真空热处理会降低其力学性能，且合金内的V元素会向表面富集，因此，钛合金真空热处理和表面涂层的烧结温度不能过高，即应低于其相转变点；通过对生物活性梯度涂层的组成和结构的设计，分析和计算了梯度涂层内的应力大小和分布，结果表明：对于本研究，当成分分布系数n=1.5时，可以获得较合理的涂层力学性能，即在沉积开始时，采用富含BG颗粒的悬浮液，以便在钛合金侧获得同底层BG有良好过渡的富BG涂层；梯度涂层界面和表面的应力大小、性质由材料组成本身的性质决定，改变成分分布系数，只能改变涂层内应力变化的趋势；涂层的厚薄不影响涂层内的应力分布规律，但涂层越薄，涂层内的应力变化越快，但这并不意味着涂层越厚越好，因为涂层越厚，涂层允许的变形越小，对于应用于弯曲受力部位的涂层而言，涂层应薄一点为好(50μm)；而对于仅纯受剪切应力的部位，如牙根种植体，涂层可适当加厚(80～100μm)；通过对HA和BG颗粒在水溶液体系和非水溶液体系中的带电特性和电泳沉积的研究发现，它们在水溶液体系中很难发生电沉积；在无水乙醇溶液中，HA颗粒带正电，可在阴极钛合金片上发生均匀的电泳沉积，而BG颗粒则带负电荷；利用复分解反应法，可以制得100～300nm的HA，通过诱导HA在BG颗粒表面结晶，可对BG颗粒进行表面包覆，获得了被HA包覆的BG颗粒，改变了BG颗粒表面的带电特性，使BG和HA颗粒在无水乙醇中均带上正电荷，从而实现了HA和BG颗粒在阴极上的共沉积。

The effects of microburner dimensions, heat conductivity and thickness of wall, external heat losses and wall roughness on com-bustion characteristics were studied.

模拟结果显示，燃烧器内径的变化、壁面导热系数、对流换热系数和壁面厚度的变化影响了热量在壁面内的传递和流体内径向温度的传递，使得燃料点燃和燃烧稳定性受到影响，甚至导致燃烧停止。

In this study, based on the Rnl, extinction coefficient k, transition coefficient of canopy layer stomatic resistance K', aerodynamics resistance ra and rc calculated with the data of Rn, LAI, rsi, the daily transpiration variation of Picea purpurea, Larix principisrupprechtii, Hippophae rhamnoides ,Betula platyphylla and Populus cathayana were studied in Datong County, Qinghai Province. Comparing with the practical transpiration variation measured by Li1600 Steady Porometer, the relative error of this model was less than ±15%, and the results were stabilized and tested by precision analysis.

本研究通过对Rn、LAI、rsi的实地观测，确定了林冠截流净辐射、消光系数、冠层阻力转换系数、空气动力学阻力和冠层整体气孔阻力，对青海大通地区紫果云杉、华北落叶松、沙棘、白桦和青杨的日蒸腾过程进行了模拟，与用快速称重法订正的Li1600稳态气孔仪实测蒸腾结果对比，模拟的相对误差在±15%以内；模型敏感性分析发现，温度、LAI以及rsi是决定模拟结果的主要参数，模型对各参数变化反应不敏感。

The plasticizer diffusion was obtained by Einstein equation. The diffusion coefficients 10-4 cm^2s^(-1 of dioctyl sebacate are respectively 0.0010, 0.0020, 0.0025, 0.0031, 0.0043 at the temperature of 273, 298, 310, 323, 348 K; and are respectively 0.0025, 0.0020, 0.0018, 0.0015 at the content of

环境温度为273，298，310，323，348K时，DOS在丁羟推进剂粘接体系中的扩散系数分别为0.0010，0.0020，0.0025，0.0031，0.0043；DOS含量为23%，37.5%，47%，60%时，扩散系数分别为0.0025，0.0020，0.0018，0.0015（单位10-4平方公分s^(-1)）。

The plasticizer diffusion was obtained by Einstein equation. The diffusion coefficients (10-4 cm2·s-1) of dioctyl sebacate are respectively 0.0010,0.0020,0.0025,0.0031,0.0043 at the temperature of 273,298,310,323,348 K; and are respectively 0.0025,0.0020,0.0018,0.0015 at the content of

环境温度为273，298，310，323，348 K时，DOS在丁羟推进剂粘接体系中的扩散系数分别为0.0010，0.0020，0.0025，0.0031，0.0043； DOS含量为23%，37.5%，47%，60%时，扩散系数分别为0.0025，0.0020，0.0018，0.0015(单位10-4 cm2·s-1)。

The numerical results become visible and vivid with software TECPLOT. And the data is processed to get temperature coefficient of ununiformity, velocity coefficient ununiformity and air diffusion performance index.

求得工作区域的速度不均匀系数、温度不均匀系数以及空气分布特性指标，为车室内气流组织分布的优化设计提供依据。

Thermal conductivities of engine oil, diesel fuel and ethylene glycol were measured under different temperatures with the hot wire measuring system developed by the author.

用自行研制的热线法导热系数测试系统，测试了机油、柴油、乙二醇在部分温度条件下的导热系数。

We found that, first the parameter of electron mass enhancement increases and finally saturates with increasing disorder. This is due to some compensation of coefficient A and Debye temperature in relation to disorder.

另外电子质量增强系数也会随无序增加而稍微变大，最后趋向饱和，这是因为系数A与德拜温度对无序关系有某种程度的补偿。

This corresponds to larger carbon transfer coefficients which can be increased with increasing carburizing temperature and can hardly be affected by carbon potential of the atmosphere.

提高渗碳温度，或渗剂中添加稀土，可使碳的传递系数增大。炉气碳势对碳的传递系数几乎没有影响。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。