温度系数

The results of calibration of 4He in desorption system show that the correlation coefficient is more than 0.99 and the contribution of memory effect can be ignored. The contribution of ionized atom T(superscript +) for partial pressure of m/e=3 is very little and is determined according to I+≈0.01I(subscript T2)+, so the measurement of 3He can be done without interference of T(superscript +). The relationship between gases release rate and annealing temperature can be obtained after the data are smoothed and differentiated.

研究结果表明：四极质谱计标定解吸系统内4He的分压＜350 Pa时，其相关系数R＞0.99，且记忆效应的贡献极弱；离子态氚T对m/e=3组分分压的贡献可按I+≈0.01I(下标 T2)+确定，不干扰3He的测定；将气体解吸所得的积分数据经平滑并微分处理后可准确得到气体释放速率与退火温度的关系，即热解吸谱。

Results The tiopronin in situ gel of 0.2 % sodium hyaluronate had proper gelating temperature and certain sustained releasing ability, Papp and retention time of which was 15.43 cm·s-1 and 130 min respectively, irritancy and stability were up to standard of ophthalmic preparation.

结果 含有质量分数0.2 %透明质酸钠的硫普罗宁原位凝胶具有适宜的胶凝温度和一定的缓释作用，其角膜表观透过系数为15.43 cm·s-1，角膜前滞留时间为130 min；刺激性、稳定性符合眼用制剂要求。

Furthermore, mechanical models were used to describe the modulus composition relation, the isochronal mechanical spetrum and the diffusion coefficient composion relation of the blends.

进一步，通过力学模型描述了该共混体系的模量-组成关系、动态力学温度谱以及透气系数与PVA含量的关系曲线。

The effects of different parameters and cross-sections on axial velocity, the distribution of secondary flow, temperature field, turbulent kinetic energy, wall friction coefficient and wall Nusselt number are analyzed in detail.

详细分析了充分发展的和发展段的湍流管道内，不同截面形状和几何参数对轴向速度分布，截面二次流结构，湍动能，曲线管道摩擦比，温度分布和曲线管道Nusselt系数比等管道流动和传热特性的影响。

The influence of inlet turbulence intensity on the velocity, temperature, turbulence kinetic, friction coefficient and Nusselt number is limited on a limited region which is smaller than 30d.

5旋转螺旋管道内的入口湍流强度对流动和温度场结构、湍动能、摩擦系数以及Nusselt数的影响都局限在距离入口端不超过30倍管道直径的有限长度内。

By virtue of the assumption, in the framework of the classical scattering theory of the interaction between incident particles and a surface, a self-consistent local model for the interaction of atomic oxygen with surface materials on the spacecraft was developed based on the kinetic theory of molecular reaction.

该模型根据入射粒子轰击材料表面的响应强度，将相互作用区域分解为强干扰、边缘及弱干扰等三个区域，分别建立了相应区域的动力学模型方程。为了量化边缘区域粒子的耗散效应，本论文引入估算材料的Debye温度的Lindemann定律，并结合热容理论的Debye模型给出边缘区域分子间阻尼运动的摩擦系数。

Aiming at the laigh thermal conductivity of magnetic refrigerant materials, this paper presents a new technical scheme named vacuum diffusion bonding, which can improve its thermal conductivity. The results indicate that under the condition of temperature ranging from 550℃ to 620℃ in holding time ranging from 30 min to 120 min and a pressure ranging from 12 Mpa to 20Mpa, both Gd and Cu can effectively bond together.

针对室温磁制冷材料Gd本身导热系数低特点，提出了采用真空扩散焊方法改善Gd导热性能的成型工艺方案，在温度为550~620℃，压强为12~20Mpa，保温时间为30~120min条件下，实现了扎和铜异种材料连接，并比较了在锐基体上溅射一层铜薄膜和不溅射薄膜两种条件下的工艺性能。

Aiming at the laigh thermal conductivity of magnetic refrigerant materials,this paper presents a new technical scheme named vacuum diffusion bonding,which can improve its thermal conductivity.

针对室温磁制冷材料Gd本身导热系数低特点，提出了采用真空扩散焊方法改善Gd导热性能的成型工艺方案，在温度为550~620℃，压强为12~20Mpa，保温时间为30~120min条件下，实现了钆和铜异种材料连接，并比较了在钆基体上溅射一层铜薄膜和不溅射薄膜两种条件下的工艺性能。

The experimental results of temperature dependence of initial permeability and the change in magnetostriction coeffic.

由退火后试样的初始磁导率与温度的关系及磁致伸缩系数的变化结果表明，当有极少量的-αFe晶体相析出时，可明显改善合金的动态磁性能；当-αFe晶体相进一步析出时，可使合金呈现良好的恒导磁特性。

Tire ; temperature ; FEA ; numerical inverse ; heat exchange coefficient

轮胎；温度场；有限元分析；数值反演；对流热交换系数

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。