粗糙表面

The precision lapping technology to machine the copper substrate using semi-fixed abrasive plate was studied. The surface roughness and material removal rate as the evaluation of indicators, the influences of the different lapping parameters on the surface roughness and material removal rate were discussed and analyzed. Experimental results indicated that the copper substrate could be efficiently machined by semi-fixed abrasive plate of 800(superscript #) SiC abrasive, and the initial roughness Ra of a machined surface could be improved from 0.553μm to 0.28μm in 10min, produced an ideal rarely scratch surface. Then processed copper polished by diamonded grinding paste, it could be satisfied for the Ni-Pd-P alloy thin film growth.

主要研究半固着磨具精密研磨非晶态Ni-Pd-P合金薄膜铜片衬底，以铜片衬底的表面粗糙度和材料去除率为评价指标，探讨了研磨过程中不同的工艺参数对铜片表面粗糙度和材料去除率的影响结果表明：用800 SiC半固着磨具对铜片衬底进行研磨加工，10min后铜片表面粗糙度Ra可由0553μm减小到0.28μm，同时表面无深划痕：加工后的铜片再经金刚石研磨膏抛光可快速获得满足Ni-Pd-P合金薄膜生长用的铜片衬底表面。

The research results showed that resin bond could hold the self-sharpening diamond more tightly than ordinary diamond, for CSD diamonds have irregular shape, rough surfaces and many incurvated angle. Under the condition of the same grinding efficiency, the grinding ratio of resin bond grinding wheels made with self-sharpening diamond was 1.6 times as high as that of the grinding wheels made with ordinary diamond.

试验结果表明，由于CSD形状不规则，有许多凹入角和粗糙表面，树脂结合剂对CSD的把持力较普通金刚石强，所以在磨削各参数相同的条件下，自锐性金刚石砂轮与普通金刚石砂轮相比，其磨削比提高60%以上。

Based on the scalar scattering theory,a mathematical model of the light scattering intensity distribution of laser beam on the back focal plane of Fourier lens by a rough surface is established by means of the probabilistic-statistical method.

本文以标量散射理论为基础，用概率统计方法建立了粗糙表面的光散射强度在傅氏透镜后焦面上的分布的理论模型，采用镜反射方向的光强与某一散射方向的光强之比来计算R_q值的方法，导出了理论计算公式。

The presence of small blowholes (2-4#m), caused by escaping volatiles, is evident on the rather rough surface of these chars.

这些半焦的粗糙表面明显有挥发物逃逸时造成的小气孔（2-4微米）。

Basic symbols;Coatings;Definition;Definitions;Dimensions;Drawing specifications;Drawings;Engineering drawings;Finishes;Geometric;Geometrical product specification;GPS;Graphic representation;Graphic symbols;Inscriptions in a drawing;Letterings;Machining;Machining tolerances;Marks;Product specifications;Production processes;Products documentation;Ratings;Reference length;Reference lines;Representation of characters;Roughness;Roughness value;Specification;Statement;Surface properties;Surface roughness;Surface texture;Surface treatment;Surface-roughness measurement;Surfaces;Symbols;Technical drawing;Treatment;Wear-quantity

中文标题产品几何量技术规范。技术产品文件中表面结构的表示方式中文主题词图形表示；参考长度；尺寸；加工公差；表面性质；产品规范；覆层；制图规范；精整；表面粗糙度；粗糙度；表面粗糙度测定；表面结构；磨损量；图纸标题；表面处理；技术制图；几何的；基准线；图形符号；符号；标记；加工工艺；文字书写；产品文件；定义；表面；粗糙度值；工程图；额定值；产品几何量技术规范；GPS；叙述；处理；图纸；机械加工；字符表示；基础符号；规范验收

Inner surface images of PS and PAMS micro-shells were obtained with PSI method.The results are consistent with the measured results by atomic force microscope.The measurement error is analyzed by studying the influence of thickness fluctuation of micro-she...

以微球壳层对超光滑碳化硅及单晶硅片表面形貌的调制作用为研究对象，讨论了微球的外表面粗糙度以及微球壁厚对内表面粗糙度测量结果的影响，确定了相移干涉法测量微球内表面粗糙度的不确定度，实验结果表明：对于表面粗糙度小于30 nm、厚度小于9μm的微球，测量不确定度小于0.4 nm。

Impingement heat transfer from the rib roughened surface within 2 dimensional arrays of circular jet has been experimentally investigated.

实验研究了二维圆射流阵列冲击肋粗糙表面换热。

According to MB model and calculation nomenclatures previously proposed, the contact behavior of two elastoplastic contact rough surfaces and the interfacial static friction coefficient were studied.

根据MB模型和提出的计算术语，对两弹塑性接触粗糙表面的接触行为及界面的静摩擦因数进行了研究。

This thesis presentsaccurate studies about acoustic scattering on roughsurface from the basic Helmholtz integral equation.

本文从最基本的Helmholtz积分方程出发，对粗糙表面的声散射进行了精确的研究。

The interaction of electromagnetic wave with fractal surface is computed. Statistic Kirchhoff solution is found analytically and experimentally.

研究了粗糙表面的电磁散射特性，用基尔霍夫近似法计算了散射系数，得到了散射能量的角分布。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。