温度系数

The results showed that the substrate concentration and temperature were important factors which influenced the rate - controlling step. The results of model calculated with effective diffusion coefficient...

结果表明，底物浓度和反应温度是影响速率控制步骤的重要因素，用得到的有效扩散系数进行模型计算，结果与实验值基本一致。

Because the heated air used as cooling medium for fast cooling down,it has several strongpoints,for example,its radiative coefficient is low,it can reduce the heat impact to the metal parts of steam turbine when it is heated to a suitable temperature,this method is easy to connect to a system and convenient to operate,and so on.

通过分析比较以上几种快速冷却方式，空气快速冷却以加热后的空气作为冷却介质，由于具有低的放热系数，加热到合适的温度可减少对汽轮机金属部件的热冲击，连接系统简单，操作简便等优点。

The experiment shows that:(1) In certain light intensity and electric field ranges (145～305V/cm) the material Si∶ with a resistivity of 1E4Ω·cm exhibits a current oscillation phenomenon at liquid nitrogen temperature;(2) At a certain electric field,the waveform of the current oscillation is stable and does not change with time;(3) The dependence relation between the oscillation frequency and light-intensity can be expressed by f=f0(L/L0)α where L0 is the minimum light-intensity needed to stimulate oscillation,f0 is the frequency under L0,L is the intensity of the light,and α is a coefficient that increase with electric field;(4) The modulating coefficient K K=(Imax-Imin/Imax decreases as the light increases;(5) The maximum value of the oscillation Imax decreases with the increase of the light-intensity while the minimum value of oscillation Imin increases slowly.

结果表明：在一定光照和电场范围内（276～305V/cm ，电阻率为10.4Ω·cm的材料在液氮温度下显示出电流振荡特性；在一定的电场下，电流振荡波形是固定的，不随时间变化；振荡频率随光照强度的增大而线性增大；调制系数随着光强的增强而减弱；振荡的最大值随着光照强度增大而减小，最小值随着光强增大而缓慢增大。

On the basis of structural features and heat transfer characteristics of a spiral-grooved tube heat exchanger,a three-dimensional geometric model was established for the flow and heat transfer in a heat exchanger with water serving as its working medium.

根据螺旋槽管换热器结构特点及传热特性，建立了以水为工质的换热器流动与传热的三维几何模型。运用有限元分析软件ANSYS模拟出换热器在换热过程中速度场与温度场的状况，分别得到了螺旋槽管内壁与外壁的对流换热系数。

Furthermore,the correlation among the strain rate sensitivity,temperature and shear strain hasalso been studied.

此外，还对应变率敏感系数与温度，剪切应变之间的关系进行了研究。

Compared with the bulk Ba8Ga12Zn2Ge32 material prepared by melting method combined with SPS (MM+SPS sample), the bulk Ba8Ga12Zn2Ge32 material obtained by melting method combined with MS and SPS (MM+MS+SPS sample) has higher carrier concentration and lower carrier mobility at room temperature.

与熔融+SPS工艺制备的试样相比，熔融+MS+SPS制备的Ba8Ga12Zn2Ge32笼合物室温载流子浓度增加而迁移率降低，在测试温度范围内，试样的电导率略有下降，Seebeck系数增加，热导率和晶格热导率显著降低，900K时其晶格热导率从1.06W/mK降低至0.42 W/mK。

By combining with pyritethermoelectricity coefficient thermometry result (100℃～240℃) and inclusion equal thermometry result(226℃～230℃and 113℃～153℃) it shows that the heated temperature of the black shale series ofNiutitang formation is between 60℃and 250℃, and the max paleotemperature between 200℃and 250℃,which belongs to the middle-lower temperature sedimentary and rock-forming and ore-forming actions inLower Cambrian black shale series in northern Guizhou.

结合前人黄铁矿热电系数法测温(100℃～240℃)和包裹体均一法测温(226℃～230℃和113℃～153℃)，判定牛蹄塘组黑色岩系的受热温度介于60℃～250℃之间，经历的最高古地温估计为200℃～250℃，属中、低温沉积成岩成矿作用，并以低温(200℃以下)沉积成岩成矿作用为主。

It is important to understand the tar evolving and cracking behavior in the fluidized bed gasifier. With peanut shell, rice straw and saw dust as raw materials, the gasification was carried out in a pilot scale fluidized bed gasifier at variant temperatures (750℃~850℃), air equivalence ratio (0.15~0.35) and catalyst addition. Simultaneously, tar component was analyzed using gas chromatograph with mass selective detector.

为了了解生物质流化床气化过程中焦油的析出和脱除特性，以花生壳、稻草以及木屑为原料，采用流化床气化反应系统，研究了气化温度(750℃~850℃)、空气当量系数(0.15~0.35)以及催化剂（白云石、橄榄石与菱镁矿）的添加等对气体产物中焦油的析出组成特性的影响，并采用色谱-质谱联用仪对焦油的主要成分进行了分析。

In order to verify the accuracy of heat transfer coefficient,2D nonlinear finite element axisymmetric model is established by the means of finite element software MSC.Marc, which is utilized to simulate the transient temperature field coupled with phase transformation process and nonlinear synthetic surface heat transfer coefficient of several typical steels in the different quenchants.

Marc作为模拟平台，建立了淬火过程二维非线性有限元模型，模拟淬火过程中的瞬态温度场，在模拟过程中以多种常用钢在不同淬火介质中的非线性表面综合换热系数为边界条件，同时耦合了相变过程的影响。

The research of the effect of inner and outer factors on the thermal barrier effect went along combining of the temperature and inner microstructure in the paper.

本文把温度和涂层内部结构组合来研究各种影响因素对导热系数的影响。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。