精度

You can see, the structure of binvalidation to the fotographic record any point of the range are the same, so there is no deformation, and facular can effectively prevent film drive instability caused by the slower recording accuracy, which is that it has very high repeat accuracy.

可以看出，这栽布局的纪录平束到胶片任一不面的间隔都不对别，因此平斑操纵变形，又可灵验制止因胶片传不静不安定所酿成的纪录精度降矮的题目，这是它具有出格矮反复精度的来因。

Considering the limits of RDSS in active positioning mode,such as poor security,limited capacity,and inability to continuously provide position,velocity and attitude outputs,a technique of tightly coupled RDSS /SINS integrated navigation system is proposed for land vehicles by utilizing the time differenced carrier phase of 3 geostatic satellites.

针对北斗系统有源定位方式保密性差、用户数目有限，不能提供连续的位置、速度、姿态信息的问题，提出利用北斗系统3颗地球静止卫星的载波相位时间差分信息，与车载捷联惯导构成紧组合导航系统，通过扩展卡尔曼滤波器估计并修正惯导系统的速度误差；引入载体的侧向和天向速度约束，改善了速度估计精度；结合北斗系统的伪距信息，消除了长航时条件下位置误差的积累；推导了滤波器观测方程，对组合导航滤波器进行了设计；通过车载实验进行了验证，实验结果表明，速度误差和位置误差的积累受到了有效地抑制，精度满足陆地战车导航的要求。

Firstly, on the basis of summarizing the research results, this paper deeply discusses the calculating model to analyze the instantaneous motion state in vehicle collision and the interrelation between restitution coefficient and vehicle collision speed. The simplified Gim tyre model is introduced, this type model has the fast computing and higher calculating precision, it is the practical vehicle type model in the analysis of vehicle collision accident at present. According to the collinear collision and two-dimension collision, the paper establishes the impact model at vehicle collision moment and the post collision movement model.

本文在总结前人研究的基础上，分析了车对车碰撞作用瞬间状态的计算模型及碰撞恢复系数与碰撞前、后速度的关系：介绍了Gim轮胎理论模型的简化形式，该模型计算速度快、计算精度高，尤其在车轮大侧偏角运动时其计算精度远远优于其它轮胎模型，是目前在汽车碰撞事故分析中最为实用的汽车轮胎理论模型：根据交通事故中最普遍的一维碰撞和二维碰撞的不同情况，分别建立了碰撞作用瞬间的力学模型和碰撞后车辆动力学模型。

Imitational precision is good, which demonstrate that Visual Structure Expert Systemcan be used to imitate cable-stayed bridge construction control, under the condition that forward-calculation is used and girder cell is used to imitate the cable cell, which is capable of acquire better control precision.

施工控制各项参数实测值与理论计算值较吻合、精度较高，说明采用结构大师用正装法对斜拉桥进行施工控制仿真计算，在斜拉索模拟为梁单元的情况下，能够取得较高的控制精度。

In order to study the z-direction dimensional accuracy of laser sintering wax models for investment casting, both the shrinkage rate and the incrassation of bottom which affected the accuracy were separated by building calculation model.

中文摘要：为了研究激光烧结熔模铸造蜡模的z向尺寸精度，建立计算模型使影响精度的收缩率和底部增厚分离。

Establish its mathematic model, and carry on correlative calculation, to confirm that the accuracy of firing data by mortar-howitzer cannon can work effectively under indemnificatory conditions of fire control system.

建立迫榴炮火控系统决定诸元精度的数学模型，并进行相应计算，由此确定在火控系统保障条件下，某型迫榴炮精密法决定诸元精度可以进行效力射。

At the early 1980s, is an effective mathematic tool to deal with the uncertain or fuzzy knowledge. Rough rule theory has been widely used in information retrieval, digital library, software engineering and knowledge discovery. Its main idea includes acquisition of rough decision rules by reduction of data under the condition of keeping an invariability of classification capacity. And it basically represents a concept by a pair of approximation sets according to the partition on the given data based on the indiscernibility relation. Rough sets theory is well suited to deal with inconsistency of the rough approximations. So it is a new mathematical tool dealing with vagueness and uncertainty, and has found its applications in many areas such as AI, KDD, pattern recognition and classification and fault diagnosis.

主要完成了以下几个方面的工作：(1)对于高速移动机器人车道线跟踪问题中的规则知识获取，首先阐述了模糊逻辑系统的基本特点、工作原理和基本作法，分析了模糊规则知识获取过于依赖专家经验知识、对于每一个细节几乎都需要人工主观经验的参与、难以处理大数据集样本等方面的不足，进而阐述了粗糙集合理论的基本特点、基于粗糙集合理论的规则获取的关键技术和工作原理，为后续章节中经典粗糙集合模型的扩展及粗糙决策规则集的性能分析做好基础；(2)在经典粗糙集理论及其一般扩展的可变精度粗糙集VPRS的基础上，提出了非均匀可变精度粗糙集模型k-VPRS。

With the developing machining technique and expanding application,how to measure the accuracy of linear guideway inerrably and fleetly has become a common problem faced by the guideways industry for its strict requirements and much measuring items.

随着滚动直线导轨生产技术的不断提高及应用领域的不断扩大，同时基于滚动直线导轨副检测精度要求高、项目多的特点，如何准确、高效的对滚动直线导轨副进行精度检测已经成为行业内面临的共同难题。

Data pre-processing technologies such as singular points elimination, registration and radius compensation are studied. Base on chord high difference algorithm, a new one called chord high difference-ratio algorithm is proposed to improve veracity and robusticity of singular points elimination. Then, a registration algorithm based on local surface reconstruction is proposed, which avoids infaust influence coming from single reference point error.

在弦高差法的基础上，提出了全新的弦高差—比法，提高了异常点剔除的准确性和柔韧性；提出了一种基于局部图形重构的重定位方法，该方法通过对特征球的最小二乘拟合，消除了单一参考点的精度对重定位的影响；在此基础上对重定位的误差进行了详细的分析，给出了精确的误差值，从数学的角度保证了重定位的精度；在三角网格法的基础上提出了基于Delaunay三角剖分的半径补偿新方法，有效改善了补偿矢量的计算效率和准确性。

However the workpiece tends to deform inhomogeneously and causes residual stress with the intuitive large numbers of the delta parameter in the skin-pass process.

以冷间表面精抽改善圆棒与等边型材的真直度和同心度等几何精度时，由於精抽制程的塑性变形区Δ参数相当大，工件容易发生变形不均，造成残留应力，影响后续产品使用之精度。

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。