The machined surface roughness reaches RaO. 88nm; flatness 0.

机床加工表面粗糙度达Ra0.88nm；平面度达0.07μm（RMS），平行度为0.01mm，加工效率提高了30～100倍，磨料成本降低60％。

To guarantee the perfect ness of thesis and utility of theory of roughness quality.

在此基础上，平整度质量控制作了原则性叙述，确保论文的完善与所建理论的实用性。

The models of the time series,spectral,fractal,wavelet are introduced evaluated,and the future direction of road roughness is pointed out.

分别阐述了路面不平度的功率谱分析模型、时间序列分析模型、分形分析模型及小波分析模型,对每一种路面模型进行了系统评价,并指出了路面不平度研究发展方向。

So, Rough Set Theory has provided the frame for knowledge roughness research.

因此,粗糙集理论为研究知识粗糙性的研究提供了框架。

The paper makes full use of USB technology and realizes the USB communication in data acquisition in the road roughness test system. It changes the traditional communication modal using the PCI interface with the computer.

充分利用了通用串行总线USB的技术特点,在道路平整度测试系统中,实现了利用USB进行数据采集传输,改变了传统的利用PCI总线接口形式的A/D采集卡与上位机进行通信的方法。

The states and the parameters, which are needed during the course of model creation, are simulated, and the simulating methods of some parameters, such as the pipeline diameter, the pipeline roughness coefficient and the valve roughness coefficient, are put forth.

主要是对建立微观模型所需的状态和参数进行了研究，提出了管段管径、管段摩阻系数和阀门摩阻系数的模拟方法。

The methods of determining infiltration parameters and roughness coefficient for surface irrigation are reviewed in this paper,the characteristics of every method are discussed.

对地面灌溉土壤入渗参数和田面糙率系数的各种确定方法进行总结,分析了各种方法的特点。

This paper studies the relationship between rough set algebra and non-classical logic algebra, and applys rough set theory to MV-algebra and R0-algebra. The roughness of filter is studied.

本文研究粗糙集代数与非经典逻辑代数的关系，将粗糙集理论应用于MV-代数和R0-代数，讨论其滤子的粗糙性并研究同态映射之下滤子的性质。