精度

According to the analysis of features of the key outcrop sequence stratigraphy, build the sequence frame, through the section comparison, and the study of feature of the 5 key outcrops, then it can be concluded that, conglomerate on the denudation plane or the other contrastive sediment are the main features surrounding the bottom border of the sequence. In the foreland basin sediment environment, the transilient group of mud rock and sandstone are the main sediment features of low-stand system tract. Thick mud rock and sandstone interbedded is the chief component of transgressive system tract, sometimes together with thick turbidity current sandstone; High-stand system tract is composed by the combination of mud rock and sandstone interbedded, with the progradation as its main style. Maximum flooding surface Sediment are usually mudstone, and the thickness is different from each other.

依据关键露头剖面高精度层序特征分析，通过剖面对比建立高精度等时层序地层格架，通过对5条关键露头剖面的详细高精度层序特征分析，认识到：剥蚀面上的粗碎屑岩或与之可区域对比的其它沉积是层序底部边界附近的主要沉积特征；在盆地沉积环境中，砂泥岩发育，厚层、块状砂岩与泥质岩类的突变组合是低位体系域的主要沉积特征；湖进体系域以厚层泥岩夹砂岩为主，有时夹厚度较大的重力流砂体；高位体系域为砂泥互层沉积组合，以进积式叠加样式为主；最大湖泛面多为泥岩，但其厚薄不一。

The manufacturing technique of abrasive tool is a key and interrelated technique in graphite electrodes abrading, and it directly affects abrading results.

精度是研磨加工中很重要的一个工艺指标，本文对研磨复形精度进行了实验研究，认为从零件原形到石墨电极的过程中，精度主要损失在从原形到研具的过程中，并对此提出了二次成型的方法和制造原形时进行误差补偿的方法来解决这一问题。

started with the analysis of characteristic parameter of the successive detection logarithmic amplifier,mainly discusses the main factor affecting its transfer characteristic by mathematics reasoning to its transfer function,studies the correlative relations of the single stair′s plus,the series with the dynamic range and the logarithmic precision by matlab and matrixx simulation.so two pieces of conclusion have been reached:one is on condition that the dynamic range is limited,the more the series that is used and the single stair′s plus is less,the higher the logarithmic precision is.the other is that using the double amplifier chain can enhance the logarithm starting point,so its stability is improved.and the conclusion has been applied to the practical circuit′s analysis of the tacan beaconing receiver.

摘 要：从分析连续检波式对数放大器的特性参数入手，对其传输函数进行了数学推导，重点讨论了影响其传输特性的主要因素，通过matlab和matrixx仿真，研究了输入动态范围与级联级数、单级增益和对数精度的相互关系，得出了两点结论：一是在限定动态范围的前提下采用的级数越多其单级增益越小而精度就会越高，二是采用双放大链结构可以提高对数起点，从而提高其稳定性。最后将结论应用于塔康信标接收机实际电路的分析中。关键词：对数放大器；连续检波；塔康信标；对数精度

Introduced one method that total station instrument to replace leveling survey ,the method predigests the outside work, improves work efficiency and it has more advantage in the complicated area.

通过精度分析，该方法可达到四等水准测量的精度，提出了提高观测精度的相应措施。

Analysis of detection ability and location accuracy of Tianjin Telemetered Seismic Network after its joining in NCUSN;2. Firstly, feed location accuracy of linear motor were analyzed and tested.

误差补偿是提高机械加工精度的有效途径，在分析测试数控直线电机进给定位精度的基础上，提出基于最小二乘支持向量机的直线电机进给定位精度误差回归建模和预测方法。

Therefore, we can choose a little worse east and north gyros to cut down the cost of the navigation system.Thirdly, SINS/OD integrated system fails to diminish the error of azimuth angle, this paper introduces the regional positioning system based on Pseudo-Satellite as a member of the integrated system to diminish the error of azimuth angle in the moving state, and further improve the precision of positioning and orientation.

仿真结果表明，天向陀螺漂移和初始方位误差角对系统的定位精度影响较大；而东向和北向陀螺漂移对系统定位精度的影响较小，因此系统中就可以适当放宽对东向和北向陀螺精度的要求，这样就可以适当降低系统的成本。

The selection and the processing precision of the materials play an important role in the precision of the mechanical watch, therefore it is necessary to research the materials and the processing methods of the balance wheel, and put forward a more reasonable approach .

其材料的应用和加工制造精度对机械表走时精度有着10分重要的影响。因此，想要提高人表的走时精度，就需要对摆轮的材料和加工方法进行研究，并提出更加合理的方法。

The selection and the processing precision of the materials play an important role in the precision of the mechanical watch, therefore it is necessary to research the materials and the processing methods of the balance wheel, and put forward a more reasonable approach .

其材料的应用和加工制造精度对机械表走时精度有着十分重要的影响。因此，想要提高手表的走时精度，就需要对摆轮的材料和加工方法进行研究，并提出更加合理的方法。

This paper gives a brief introduction of research work on the fabrication measurement of rotation accuracy of machine tool main spindles. The following problems have been studied, stability of a new type base circle generator, mechanical method of eliminating eccentricities, precision fast eccentricity-regulating equipment, program of autosof tware for checking delaytime number for improving sampling accuracy and its au...

本文通过试验研究，讨论机床主轴回转精度工业测试的一些主要问题：新型基圆发生器的稳定性；机械消偏法及快速高精度调偏心装置；提高采样精度的自动软件检测延时数程序及自动定标技术；干扰的产生原因及消除方法；主铀的工业测试规范。

The factory has a modern professional test block production lines, mold production lines, with high-precision optical coordinates boring machine, CNC EDM, line cutting, CNC lathes, milling machine, processing center, with high-precision surface grinder, both inside and outside grinder, Curve grinder, NC engraving machine, and try block flat bottom hole covered inspection techniques, porous high-precision measuring instrument and multi-digital, analog ultrasonic flaw detector, test equipment, such as complete sets of professional quality equipment Bai Yutai, with more than 10 heat treatment equipment Taiwan, and has strong new product development capacity.

本厂具有现代化的专业试块生产线，模具生产线，拥有高精度光学座标镗床、数控电火花、线切割，数控车床、数控铣床、加工中心，拥有高精度平面磨床、内外圆磨床、曲线磨床、数控雕刻机，以及试块平底孔覆膜检验技术、微孔高精度测量仪，多台数字、模拟超声波探伤仪器、专业成套检测仪器等优良设备百余台，拥有热处理设备十余台，并具有较强的新产品开发生产能力。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。