精度

The high-accuracy breezing rack for diamond saw with position fixer and the thin-wall engineering drill-breezing rack designed and produced by our company are meticulous, beautiful and accurate, thus enjoy a good reputation in the field and are very popular with consumers.

我们设计生产的高精度定位金刚石锯片焊架和工程薄壁钻焊架工艺精细、外型美观、定位精度高，在行业内有良好的口碑，深受广大用户的欢迎。

So in order to solve this problem, we not only use variable precision rough set and ameliorate the arithmetic-reduced used in traditional Rough Set, but also describe this uncertain decision information with weight support and confidence of classing rule.

为了解决这个问题，本文采用了可变精度粗糙集模型，并对传统粗糙集的一种属性约简算法作了改进，以适用于可变精度粗糙集模型，最后引入加权关联规则中的加权支持度和可信度来描述不确定性信息。

The mathematics description of the non-spherical lens is the most important problem for the beam shaping system design. A numerical simulating method and its precision analysis are given, and the results indicate that this method is simple, and can be used for the design of LD beam collimating system with non-spherical lens.

非球面柱透镜曲面的数学描述是人们目前关注较多的问题之一，作者使用数值拟合的方法，对其进行了数值拟合并给出了精度分析，结果表明：该方法简单、直观，能够完全满足特定精度的要求，从而可以方便地用于非球面柱透镜的分析和设计。

In the process of the oil field exploitations, the compartmentalizing and contrasting the high precision stratums are the key work in the strata study, the delicacy level of the compartmentalizing and contrasting the strata groups directly decides the depth and precision for recognizing a oil reserve rock.

在油田开发过程中，高精度地层的划分和对比是进行储层研究的关键性工作，油藏层组划分和对比的精细程度直接决定了对本区储层认识的深度和精度。

Simulation result shows that the effect of coning error on system precision can be reduced via improved hardware precision and software compensation.

仿真结果表明，采取提高硬件精度和软件补偿的方法可以有效地降低圆锥误差对系统精度的影响。

Nonlinear friction inevitably debases the accuracy of servo systems . So , appropriate methods must be carried out to eliminate the frictional effects .

而低速的非线性摩擦不可避免要影响伺服系统的精度，所以开发高速高精度的数控机床，必须合理消除摩擦带来的影响。

By deducing and analysing the accuracy of the method, it proves that the new method can meet the accuracy demand.

通过对该方法精度的推导和分析，论证出该方法能满足桥梁检测的精度需要。

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。

Secondly, the author has researched the wavelet coefficients distribution property based on the histgram of detail subimages, and proposed an adaptive image quantization algorithm according to local data distribution in every subimage. In this quantization procession, every subimage will be disparted to some sub-blocks, and the sub-blocks will be quantized with different quantizer according the coefficients distribution; when the bias is large, the sub-block will be quantized with high accuracy; when the bias is little, the sub-block will be quantized coarsely.

其次，作者通过对小波高频子带图像系数分布直方图的分析研究，根据高频子带图像中绝大多数系数的幅度很小、幅度大的系数出现的几率很小的特点，提出了一种基于子带图像局部数据分布特征的自适应量化算法：先把高频子带图像分成较小尺度子块，子块系数离散性越大，采用精度越高的量化器：子块系数分布越集中，使用精度较低的量化器。

For the usual algorithm of deciding the initial structure of Elman depends on expert knowledge, an improved species niching PSO was presented in order to optimize the structure and parameters of Elman simultaneously. From the results obtained in this thesis, the improved PSO algorithms based Elman neural networks are of excellent performance. The improved PSO algorithms have strong global search ability while improving the convergence speed and accuracy so that it can be used in various fields.

通过本文的研究可以看出，将改进的PSO算法应用于Elman网络的设计具有很好的性能，两种改进PSO算法不仅具有很强的全局搜索能力，而且在收敛速度和精度上有了明显的提高，它们不但在Elman网络权值学习中获得很好的训练精度，还具有一定的普遍适应性，可以用来解决其它组合优化问题。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。