查询词典 topography

Because the positron annihilation spectroscopy can directly show the information of the defects in the materials, we have measured the positron life of the gallium arsenide samples of different surface roughness. And we have discussed the effect of the surface topography on the positron life.

因为正电子湮没谱测量能直接给出缺陷的信息，我们用正电子寿命谱测量不同表面粗糙度的GaAs样品，讨论了表面形貌对常规正电子寿命测量结果的影响。

ABSTRACT In this paper, integrated with surface topography, asperity contact behaviour and fluid mechanics, the lubrication of real enginee...

本文结合实际工程表面的形貌特征、表面微凸体接触力学性质和润滑力学性质对粗糙表面的润滑及摩擦特性进行了系统的实验研究和理论分析。

Under the basis of fracture topography analysis, the micro-contact model of asperity and the contact process between two fracture surfaces have been studied.

在裂缝拓扑特性参数分析的基础上，对裂缝接触的微观弹性模型和自然裂缝的实际接触过程进行了深入地分析。

ABSTRACT In this paper, integrated with surface topography, asperity contact behaviour and fluid mechanics, the lubrication of real engineering surfaces and their rubbing behaviour are described in experiment and theory.

本文结合实际工程表面的形貌特征、表面微凸体接触力学性质和润滑力学性质对粗糙表面的润滑及摩擦特性进行了系统的实验研究和理论分析。

Based on measured surface topography in conjunction with theoretical analysis, the characteristics of surface during wear process are studied, and the asperity density and asperity curvature radius are given for the first time.

本文通过对缸套表面的实测和分析，研究了在磨损前后表面形貌的变化，并首次定量描述了微凸体密度、微凸体曲率半径及其沿高度方向的变化。

Methods In 390 eyes of 197 cases with spherical equivalent refraction between -0.75~-16.25 D and astigmatic -0.25~-4.00 D, the relationship between the dioptre and parameters of topography was analyzed.

年龄 18~51 岁的197例392眼，等效球镜为-0 75~-16 25 D，散光度为-0 25~-4 00 D近视眼，对其屈光度及角膜地形图各参数的关系进行统计学分析。

It will meet the needs of western economic construction and carrying electricity from the west to the east. Because these stream segments are mostly in high mountain and barranca, their topography is precipitous and geological condition is complicated and the project scale is majesty.

由于这些河段大都处于高山峡谷，其地形陡峻地质条件复杂，而且工程规模雄伟，需要建设一批高坝，以形成大水库、大电站，作为国家重要的能源基地。

For example, karst topography is very approach this mode. We not only discuss the effect relation of dipole field in the mediator, but also in the property of antenna. Imaginaries Bessel function is involved in the process of discussion. because it is very important to the result.

钻孔雷达一般使用偶极天线，所以对偶极天线辐射场正反演问题的研究是目前的当务之急，它直接影响着对钻孔雷达资料的正确解释，对进一步研究钻孔雷达天线的有关特性及钻孔雷达的研制起着非常关键的作用。

Internal tides (internal waves of tidal frequency) are generated, usually in the connecting area between shelf and slope, by the tide-topography interactions and they have many effects on biocoenosis and objects in the ocean.

海洋中的陆架坡折区是地形变化剧烈的区域之一，当表面潮与这里的地形发生相互作用时，在该区域层化的海水内部引起强烈的扰动从而形成内潮。

The buildings are embedded to varying degree within the rocky topography, and bluestone walls weave between architecture and landscape to reinforce their integration.

住宅坐落在多岩石的环境中，而住宅的蓝砂岩墙壁将建筑和风景结合在一起。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。