粗糙度

This paper studies the influence of eletrical parameters on the cutting rate and surface roughness of the cutting compound material SiC p/LY12 in wire cutting electric discharging machining and analysed the surface features of cutting with SEM.

研究了电参数对电火花线切割加工SiCp/LY1 2复合材料的切割速度和表面粗糙度的影响；用扫描电镜分析了复合材料线切割加工表面的SEM形貌。

Wire cutting electric discharging machining ; compound material of SiC p/LY12; surface roughness ; cutting rate

电火花线切割加工； SiCp/LY12复合材料；表面粗糙度；切割速度

Diamond Dresser ; Dressing Parameters ; Dressing Rate ; Surface Roughness

中文关键字钻石修整器；修整加工参数；修整率；表面粗糙度

It is verified that the surface roughness and turning force are improved by using diamond tool.

证实用金刚石刀具车削硅铝合金可以获得优良的表面粗糙度和小的切削力。

The released species may facilitate and accelerate their detachment and diminish the initial elastic range of bone cement. This may create loosening or shrinking effect on the inserted stem. A conclusion for both behaviors suggest that a variation of relative and dynamic interface in use.

在骨泥与钛金属之长时间微幅运动作用下，骨泥材料受到压力、微幅运动及摩擦热的影响，其表面出现残屑堆积、热软化压平等现象，使得骨泥与钛金属界面产生滑移，进而产生残屑及粗糙度的改变。

The cutting surface quality and its affecting factors of ZA22/Al〓O〓 composites were investigated systematically with hard metal alloy cutter on an engine lathe.

在普通车床上采用硬质合金刀具，首次系统研究了该复合材料的切削加工表面质量及影响因素，发现要获得低的切削加工表面粗糙度应选择小的切削深度、小的刀具进给量及高的切削速度。

The reason why the abrasives with different hardness has different polishing behavior is analyzed.

解释了在相同的抛光条件下不同硬度的纳米磨料具有不同的抛光表面粗糙度的原因。

The surface and cross section of uncoated and coated Polyvinyl acetals were analyzed by microscope and SEM, results showed that, the contact angle of the coated fiber decreased in most of the areas of the fibers, the chitosan film on the fibers was thin and uniform. At the same time, there was no residual material in the coating process and the whole process was environmentally friendly.

结果表明，该方法切实可行，通过显微镜和SEM照片对涂覆壳聚糖前后的维纶纤维进行微观分析，发现在化学纤维表面形成的壳聚糖膜薄而均匀，同时增加了化学纤维的表面粗糙度，涂覆效果较好；通过接触角的变化说明纤维的亲水性得到改善；该方法还具有无残留物和对环境友好的优点。

Through theoretical analysis and according to experimental re- suits,this paper proves the technology of extrusion grinding and polishing and then ultrosonic cleaning of aluminium profile extrusion dies after electro discharge ma- chining to be an ideal precision grinding technology.

本文通过理论分析和实验结果，证明了对经电加工后铝型材挤压模具工作带进行挤压珩磨抛光和超声波清洗是理想的精密研磨技术，有效地去除了变质层和残余应力，表面粗糙度小于 Ra=0.4μm，满足了该模具 PCVD TiN 的工艺要求。

The electroformed copings and interfacial area were examined by SEM and EDS analysis. Results: Surface roughness increased by sandblasting, O content had not been greatly improved by preoxidation, the coping surface formed a porous structure after applying gold bonder. The gold and porcelain combined tightly, mechanical chimera and simple diffusion of Al, O elements were observed in interfacial area.

结果：喷砂可以增加金沉积表面的粗糙度，预氧化没有使氧元素含量得到很大提高，涂布金黏结剂后金沉积表面形成了多孔样的结构：金瓷结合紧密，可见明显的机械嵌合结构，金瓷界面出现了铝、氧元素的单纯扩散。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。