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粗糙表面

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In addition, the surface roughness of aluminum substrate has a remarked influence on cracking of anodic films.

此外铝合金基体的粗糙度对其表面氧化膜中的裂纹有很大影响,较为粗糙的表面,裂纹也较少。

The simulation results of smooth metal surface with roughness of 1.6 μm accord with the experimental data very well, but the simulation results of rough metal surface with roughness of 6.8 μm disaccord with the experimental data.

对于表面粗糙度为6.8 μm的较为粗糙的金属表面,仿真出的结果和实验中获得的数据相差较大。

In order to realize quick,nondestructive and automatic measurement of the surface roughness of high accuracy gauge block,a surface roughness measurement system based on interference image processing is studied out.

为实现高精度量块表面粗糙度的快速、无损伤、自动化检测,研制了一套基于干涉图像处理的表面粗糙度检测系统。

But the surface roughness marking function conforming to the national standard isn t supported in the AutoCAD software.

表面粗糙度是机械图纸的重要组成部分,但是AutoCAD绘图软件中没有提供符合国家标准的表面粗糙度标注功能。

Decreasing the parts' surface roughness, as it is shown after a long time practice that can realize the reliability and stabilization of the match; can reduce faction coefficient, wear, stress concentration, vibration, noises, and power consumption; can improve the operative precision and perceptivity; can increase the support area and contact intensity; and also can improve wear degree etc.

长期的生产实践表明,降低零件的表面粗糙度,对保证配合的可靠性和稳定性;对减少摩擦系数,降低动力消耗;对提高机械和仪器的工作精度和灵敏度;对增大支撑面积,减少磨损,提高接触刚度;对减少应力集中,增加耐疲劳强度,减少振动和噪声等均起着重要的作用:即表面粗糙度直接影响着机械和仪器的使用性能和使用寿命。

A relationship of the roughness parameters of diffusing surface strongly depend on the space correlation function of quasi—ideal imagine system has been confirmed and a new method for evaluating roughness has been proposed. In Chapter 4, the statistical properties of superposed dynamic speckle from a rotating diffuser have been investigated under double Gaussian—beam illumination.

同时,本章还证明了准理想外差成像系统动态散斑的空间相关与表面粗糙度参数之间有很强的依赖关系,在此基础上提出了一种新的工程表面粗糙的测量方法和计算机仿真的结果。

The main research content is: Using the experimental of cutting force and roughness of high speed face milling cutter and high speed end milling cutter mill aluminium alloy and cast iron, analyze the rules of the high speed milling velocity, feed rate per tooth, milling depth and milling width to high speed processing. Use multiple linear regression method, set up surface roughness and the cutting force fluctuation models. Certify the regression model notability, and provide a reliable guarantee for the accuracy of function optimization. Based on the targets of productivity, manufacturing cost, surface roughness, cutting force fluctuation optimization model, according to research of the high speed milling parameters selecting restrict of work piece, machine, tool and safety, set up high speed milling parameters multi-object optimization system.

本文以已有的高速铣削机理及高速刀具技术研究成果为基础,结合高速铣削试验,进行了基于遗传算法的高速铣削参数优化研究与系统开发,主要的研究内容为:通过高速面铣刀和高速立铣刀加工铝合金和铸铁等材料的切削力和表面粗糙度试验,进行了铣削速度、每齿进给量、铣削深度和铣削宽度对高速铣削加工过程影响的研究;采用多元线形回归的方法,建立了切削力及其振幅和表面粗糙度模型,并对模型的显著性进行验证,为高速铣削参数优化模型的建立奠定了基础。

The roughen factor of roughened Ni electrode is calculated by compared the differential capacitances of smooth and roughened Ni electrode.

通过测量并比较电化学粗糙前后镍电极表面的微分电容曲线计算出粗糙镍电极的粗糙度,从而进一步计算出该粗糙镍电极的SERS增强因子约有四个数量级; 3。

Methods: 48 casted Ni-Cr alloy metal specimens (12.0 mm×1.0 mm) were fabricated with ShoFu Vintage Halo porcelain and divided into six groups , eight pieces for each group. They were polished against 200-, 400-, 600-, 800-, and 1,000-grit sandpaper after body porcelain sintered, respectively. The specimens in a sixth group not polished was used as control. Surface roughness and Color parameters of the specimens were measured with a Surface Roughometer EX2154-13 and a spectrocolorimeter respectively.

铸造厚度1.0 mm、直径12.0 mm的镍铬合金试件48片,平均分为A~F 6组,每组8个,用等厚的松风Halo A2色粉状遮色瓷,体瓷和釉质瓷构筑金属烤瓷试件。A组体瓷不进行打磨,作为对照;B、C、D、E、F组分别用200、400、600、800、1 000目的水砂纸打磨体瓷表面;然后用表面粗糙度测试仪EX2154-13测量各组的表面粗糙度。

In this paper,the surface roughness and residual stress of 1Cr11Ni2W2MoV stainless steel after laser shock peening and shot peening were tested and analyzed.The results show that laser shock peening samples have better surface quality and larger residual stress than shot peening samples.

对不锈钢材料1Cr11Ni2W2MoV进行了激光冲击强化和喷丸强化后表面粗糙度和残余应力测试分析,与喷丸相比,激光冲击强化对试件表面形貌和表面粗糙度的影响更小,产生的残余压应力更大。

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I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时,滚道或滚动元件褪色是很常见的特征。

The lawyer's case blew up because he had no proof.

律师的辩护失败,因为他没有证据。