温度系数

A modified etching model is proposed, in which the diffusion coefficient is a function of the temperature and concentration and the etching rate constant is a function of temperature.

在前人腐蚀模型基础上考虑扩散系数是浓度和温度的函数，腐蚀速率常数是温度的函数，得到了修正模型。

Based on the acoustic absorption theory of microperforated panel and by the means of the theoretical analysis and emulation, the paper focuses on the acoustic characteristic including acoustic impedance, frequency and acoustic absorption coefficient of microperrforated panel working in the combustion chamber which has high temperature and great temperature gradient.

摘要根据微穿孔板吸声理论，采用理论分析和仿真的方法，着重讨论微穿孔板在温度梯度下的声阻抗、共振频率和吸声系数等声学特性，分析其受温度影响变化的机理。

The results show that the system performance can be improved and the coefficient of performance increases as the ambient temperature and the compressor speed decreases. COP increases as the air velocity of condenser increases while the return air temperature of refrigeration evaporator has negative effects.

研究结果表明：随着环境温度的降低以及压缩机转速的减小，系统总体性能有所提高，COP增大；随着冷凝风速的增大，性能系数COP增大；而冷藏蒸发回风温度的升高，也会影响系统的总体性能，使得COP降低。

And it establishes the math model of astatic heat transfer around the digester fermenting. The math model is dispersed by the use of control volume integration. Then, it presents composing of the experiment system and preparing of the experiment devices. It analyses the data of steady operation in summer and in winter. Through analysis, we can know the change condition about the soil temperature around the digester fermenting、the temperature of solution and heat-transfer content.

在实验方面，介绍了实验系统的组成和设备的选取准备，并选取实验中夏季和冬季运行比较稳定的两段时间，进行数据分析处理，通过分析可知沼气池周围土壤温度、料液内温度以及换热器加热量的变化情况，同时，还计算出了钢管换热器的传热系数。

For the first time, Curie temperature and the properties were improved obviously by A-site substitution with A-deficiency, based on the effects of atomic radius and stress on the Curie temperatures.

结合原子半径和应力对材料居里温度的影响，首次利用A位含缺位的复合取代CaBi〓Ti〓O〓中位于A位的Ca，获得了居里温度和压电系数同时大幅度提高的高T〓压电陶瓷。

Based on the effects of atomic radius on the Curie temperature, new bismuth layer-structured piezoelectric ceramics Ca〓〓Bi〓Ti〓O〓 with high Curie temperatures and piezoelectric activities were obtained by A-site substitution for Ca.

本论文从取代原子半径对居里温度的影响入手，利用碱金属原子Li，Na，K和Ce原子复合取代层数m=4的铋层状铁电体CaBi〓Ti〓O〓中位于A位的Ca原子，在保持材料高居里温度的前提下获得了压电系数d〓明显改善的铋层状结构压电陶瓷。

The melting temperatures were found to be 71℃ for aluminum nitrate enneahydrate and 76℃ for barium hydroxide octahydrate, respectively. The measured temperature of fusion agreed with the data in literature.

但这些无机水合物在不同温度下的导热系数未见系统报道，为此，本文测定了一系列熔化热大于150 kJkg-1、熔点低于100℃的无机水合物在10℃~80℃温度范围的导

The results indicate that the bottom surfacetemperature increases as current density, thermal conductivity, specific electric resistance and steelmaking temperatureincrease, and decreases as the bottom thickness and the heat change coefficient on boundary between shell and air increase.

揭示出底表面温度随电流密度、材料热导率、电阻率及炼钢温度增加而增加，随传热系数和底厚度增加而降低的关系。

Through testing the effects of temperature, time and so on, better parameters of roasting reduction method can be shown as follows: excess coefficient of carbon 0.8-0.9, reduction temperature 1 150℃, reduction time 50 min.

通过考察温度、时间等工艺因数的影响，得到了焙烧还原法合理工艺条件：碳过量系数为0.8-0.9、还原温度1150℃、还原时间50min。

So the first method is the best one, which makes use of the temperature discrepancy between brick and flue gas during initial stage of combustion to intensify burning by excess coefficient of maximum coal gas against minimum air, so that the temperature at top of arch can reach the highest specified value 1350℃ in 15-30mins.

因此较优的燃烧制度是固定煤气量调节空气的快速烧炉法，即燃烧初期利用砖温与烟气温度相差较大的时机，以最大煤气量和最小空气过剩系数来强化燃烧，尽快在15～30min内将拱顶温度烧到规定的最高值1350℃。

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。