查询词典 datum mark

Main axle of CA6140 engine lath case machining line for the research, design, Including the Road processes processing methods, machine tools, cutlery, fixtures, a Catholic, measuring instrument choice, datum selection, positioning

此篇论文主要内容是对CA6140主轴加工工艺路线进行的研究、设计，其中包括了各道工序的加工方法，机床、刀具、夹具、辅具、量具的选择，准面的选取，定位和夹紧方案的拟定。

Then, have predicted stock markets of Shanghai and Shenzhen with the completed nonlinear kinetics model, predict data is it fit to go on with figure of real data , compare real data (20 bargain day ) with datum that are predicted, the result is satisfactory, show the rationality and accuracy of this model further.

然后，用已建的非线性动力学模型对沪、深股市进行了预测，将预测数据与实际数据的图形进行了拟合，并将实际的数据（20个交易日）与预测的数据进行了比较，结果令人满意，进一步表明了该模型的合理性和准确性。

Based on the arrangement and analysis of test datum, the engineering characteristics of the fill are studied, such as shear strength, compressibility, permeability, mechanical analysis, capillary height etc.

然后在室内土工试验数据的整理与分析基础上，对路基填土的工程性质进行了一系列深入的研究，如粉土、粘土以及一定掺灰比的灰土的抗剪强度、压缩性、毛细水上升高度、渗透性、粒径分析等。

Integrated analysis of 7 times heavy rain in Yunnan from July 19 to August 2 based on actual observation weather datum and satellite cloud atlas and Doppler radar image. The results show that: high-low southwest jet stream is important effect system. The maintenance of southwest jet stream provides water vapor, momentum, fast transfer of unstable energy for the lasting heavy rain. The further configuration of plateau shear line and southwest jet stream is necessarily condition about 7 times heavy rain. The lasting heavy rain appeared on big value region of 500hPa vapour flux and vapour flux divergence. The shear cloud band and subtropical high cloud band crossed and confluenced in Yunnan on the satellite cloud atlas. The maintenance and intensification of shear cloud hand and periphery cloud band of subtropical high correspond quite well to heavy rain falling region and cloud band distribution.

应用实测气象资料，结合卫星云图与多普勒雷达图像分析，对2007年7月19日到8月2日云南少有的7次强降水过程进行综合分析，结果表明：高低空的西南急流是重要的影响系统，西南急流的维持为持续性强降水过程提供了水汽、动量和不稳定能量的快速传递，高原切变线与西南急流的有利配置，是7次持续性强降水过程必不可少的条件；持续性强降水出现在500hPa水汽通量大值区和水汽通量散度辐合区；卫星云图上切变云带和副高外围云带在云南汇合，切变云带和副高外围云带维持、加强的过程与强降水落区的时空分布对应较好。

Based on the thorough study of sources and characteristics of the three errors in laser collimation technology, an error correction method by integrating multi-point detection, multi-variant polynomial step-by-step regression analysis and adaptive noise-elimination is proposed. The influences of beam drift, bending and whipping are taken into consideration to enhance the stability of plumb datum line.

在深入分析激光准直技术中三项主要误差因素来源及其特性的基础上，提出了利用多点监测、多元多项式逐步回归分析法与自适应除噪技术相结合的综合修正方案，建立铅垂基准线的修正模型，综合考虑了激光漂移、光线弯曲以及随机抖动等因素的影响，从而有效提高了铅垂基准线的稳定度。

This paper discusses the vertical datum of single point dynamic and questions concerned of its establishment.

不同的基准所求定的高程未知参数与运动速率参数也不同，基准问题是研究地壳垂直运动的重要内容之一。

Regional anomaly datum in a point is estimated according to the data in some information points around some point.

根据某点周围若干个信息点上的重观测数据估计出该点处的区域异常值，而且这种估计是在满足线性、无偏、最小估计方差条件下求得的。

Five class objects of geodetic data are determined. They are spatial datum object, point object, network object, intersection object and collection object. The object-oriented geodetic data model is established in the paper.

确定了5种大地测量数据的对象类，即空间基准对象、点对象、网对象、关联对象和集合对象，并以此建立了大地测量数据的对象模型。

A new method based on the Maximum Effective Circle is presented using the characteristic of the palmprint that the uniqueness and the invariance to the rotation can be obtained by obtain the datum point.

因此，本文在学习掌纹识别主要技术的基础上，重点分析研究了掌纹识别技术中的不变性特征提取技术，并利用掌纹识别技术具有可通过基准点对掌纹进行定义从而获得旋转不变性和唯一性的特点，在掌纹图像的不变性特征提取方面提出了一种基于最大有效圆的定位方法。

I don't know if you are aware that one of the earliest Western maps of this area was produced by French mariners in the eighteenth century, using Chek Lap Kok, the site of our brand new airport, as the principal datum point.

不知道大家有没有留意到，西方朋友最早期替我们这个地方绘制的地图，其中一张便是十八世纪法国航海人员所绘制的。当时，他们用的主要基点正是我们新机场所座落的赤濸角。

These are places without aristocratic baggage; egalitarian places open to talent, self-improving, engaged in learning and innovation through networks that were at once competitive and cooperative.

这些地方没有贵族遗风作祟，而且对于那些有天分的人是开放的平等之地，这些人善于通过那些曾经很具有竞争力与合作精神的关系网进行自我提高以及学习创新。

Christine: You don't want to see me?

你不想见我？