粗糙度

Press wereformed when oxidation film was developing, inanition in the diffussion layer and the surface Ra of raw materials were the cause that A12O3 film had crazed and desquamated .

氧化膜生长时产生的本征压应力、扩散层内的空洞和基体表面粗糙度是氧化膜Al_2O_3开裂及剥落的主要原因。

Calculates the coordinates of the spindle and drive shaft and checking the center distance, determined department spindle must use dislodges the gear.

根据柴油机齿轮室盖的结构特点、加工部位、尺寸精度、表面粗糙度及生产率等要求，确定该机床为单工位卧式组合机床；为确保加工精度，采用&一面两销&的定位方案；为实现无级调速，安全可靠，选择液压滑台；根据零件的大小及被加工孔的位置确定主轴箱的轮廓尺寸；由加工工艺选择滚珠轴承主轴，通过计算扭矩确定主轴和传动轴的直径；齿轮的模数是通过类比法确定；齿轮齿数和中间传动轴的位置是由&计算、作图和多次试凑&相结合的办法确定；计算主轴、传动轴的坐标并进行中心距验算，确定部分轴上需采用变位齿轮；轴上的齿轮套、键等零件按轴号选取相应的标准件。

This paper analyzed SEM characteristics, surface roughness and micro-hardness of electroformed composite electrode materials, and studied their electrical erosion resistance .

通过复合电铸技术，在耐电蚀性强的铜主体中引入抗电蚀性能优异的石墨微粉，制备了铜-石墨复合电极材料，探讨了复合电沉积条件与石墨含量的关系，用扫描电子显微镜分析了复合铸层的形貌特点，测定了表面粗糙度和显微硬度，试验研究了复合电极材料的抗电蚀能力。

With the development of modern precision processing and automated fabricating, there is a great demand for on-line surface roughn...

现代超精加工的发展和生产自动化程度的提高，对表面粗糙度在线检测提出了迫切的要求。

On basis of long duration successive test with one pilot scale test facility,the effects of fluidizing velocity,particle size and air distribution on the combustion behavior were discussed in detail,as well as agglomeration phenomenon in ...

结果表明，颗粒度大小影响秸秆挥发分的析出以及传热过程，密度大小影响到原料的循环以及传热系数，表面粗糙度直接影响到秸秆的辐射换热。

The results showed that, as a kind of anode corrosion inhibitor, BTA adsorbed on the copper surface and then funned a protective film by condensation reaction, and then decreased the corrosion current of copper by increasing the equilibrium potential.

结果表明。当H2O2存在时，抛光液中BTA作为阳极缓蚀剂吸附在抛光表面，提高了阳极铜溶解的平衡电位，并通过缩合反应生成保护膜，减小了抛光后的表面粗糙度，提高了表面质量，同时在一定程度上增加了抛光过程中的摩擦系数。

Gear ; gaging head ; surface roughness ; involute profile measuring machine ; measuring error.

齿轮；测头；表面粗糙度；渐开线检查仪；测量误差

The hybrid materials were characterizedby inner-molecular hybrid and interpenetrated hybrid network.

对该杂化材料薄膜采用分步、可控的极化工艺处理后，电光系数〓可达32pm／V，表面粗糙度〓为1.2nm，光学损耗L为1.3dB／cm。

Meanwhile, she is equipped with the most advanced production and inspection machines: one Mitsubishi 4-axis drilling-milling machine center, five 3-axis drilling-milling machine centers, 50 CNC lathers, 14 general lathers, Three-Dimensional Inspection Machine, Angle Inspection Machine, Salt Spray Machine, Surface Roughness Inspection Machine etc.

与此同时，公司装备了现代化的生产和检验设备：一台大型三菱4轴镗铣加工中心，五台三轴镗铣加工中心，50台CNC数控机床，14台普通机床，三坐标检测仪，角度测量仪，盐雾实验机，粗糙度测量仪等等。

The bare cells with smooth surface presented transverse outspreading effect at mica surface. Great changes took place in surface roughness for those bacterial cells after metallization. A large number of nickel nanoparticles were observed to be equably distributed at bacterial surface after activation and subsequent metallization.

结果显示，空白对照菌表面平整光滑并在云母基底表面表现出较显著的铺展效应；经过活化和化学镀镍后的菌细胞表面粗糙度明显增大，并在基本保持原有菌模板外形的基础上，其高宽比有所增大。

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。