查询词典 datum mark

The link of spatial datum and attribute datum is realized by giving the same ID, such as SUID,PRID.

通过赋相同ID码的技术实现了空间数据和属性数据的连接。

Basing on the statistic datum existed of bridge deck pavements, analyze the main failure modes and its main causes to damage on different styles of bridge, at the same time, through the big calculation software ,establish the space models to simulate the course of mechanics of bridge deck pavements, analyze the main factors which affect the bridge deck pavement"s mechanics and the relations between them; according to the atmospheric circulation circumstances of bridge deck pavements, take the statistic datum of using life of prefabricated T-beam、box girders and casting girder in region of HUA-NAN as examples to returning analysis ,establishing the life prediction model of this style bridges; associating "the Method of Estimating to Life Cycle Costing,bring forward this method to take a evaluation of economy on bridge deck pavements, insure the life cycle costing reasonable; giving some tactics on the design of bridge deck pavements.

以既有桥梁的桥面铺装层使用现状统计资料为基础，分析了各种类型桥面铺装层的主要破坏形式及其主要损伤原因，同时利用结构分析软件，对桥面铺装层建立空间模型模拟其受力作用过程，分析影响桥面铺装层受力大小的主要因素以及各因素与铺装层受力大小之间的关系；按照桥面铺装层所处环境的不同，以华南地区预制T、箱梁和现浇梁的桥面铺装层正常使用寿命统计数据为例，通过回归分析建立该类型桥面铺装层的正常使用寿命预测模型；利用寿命周期费用评价方法，对特定铺装层的设计方案某一参数的变化所带来的经济效益进行评价；给出桥面铺装层设计构造建议。

Company can achieve considerable benefit from it . But in the state of internal equipment,some is imported from other countries,and some is buyed directly . There is not any datum about the structural parameters,the dynamic parameters,and the mechanical parameters of coil box in nation,and other countries can not afford these datum from the economic angle .

热卷箱的使用为公司带来了可观的经济效益，但从国内使用的热卷箱设备来看，有的是引进国外技术，在国内进行转化设计；有的是直接购买二手设备，因此，目前国内还几乎没有关于热卷箱机构参数、运动参数及力能参数设计计算的相关资料，而出于经济角度，国外也没有提供这些资料。

In this paper,a series of procedures including optimization of instrument operating parameters,deduction of background,correction of spectral line interference and matching of datum are proposed for eliminating the element interference and the datum effects of calcium and magnesiu...

通过对南海沉积物样品的大量实验和国家一级标准样验证，建立了适宜高钙海洋沉积物元素含量的ICP-AES测试方法。该方法检出限为1.55~271μg/L，相对标准偏差RSD.54%(n=6)。

Based on the case study, the conclusions were reached that relative positional root mean square error of each point becomes more as distance between the point and datum point becomes more. And the relative deformation offsets under different kinds of datum are helpful for deformation analysis.

从该算例可以看到，各点的相对点位中误差随基准点至该点距离的增大而增大，根据在各种基准下得到的相对形变值有利于进行形变分析。

The core part of this system development is to turndrawing datum, namely space data, into digital atlas in "ArcView", and then sort thedrawing datum into Point, Line, Polygon theme which user required so that we couldedit and manage these themes. The development process of this system is open. Users can edit and appendinformation at any moment if they want.

ArcView 的突出特色是能够将空间数据和属性数据动态结合在一起，开发过程中核心部分就是将所需的矿上图纸资料作为空间数据导入 ArcView 中形成数字地图并将其分为所需的点、线、面进行编辑管理，然后收集整理与空间数据中各主题相对应的属性表所需的属性信息并进行相应的编辑。

Using the smart card recorded data, the travel rate time per trip can be calculated, and the regulation of travel rate time by taxi can be fond from the cumulative taxi datum. In this paper, three new reliability indices and methodologies about travel rate time are developed, and Beijing transportation network reliability is analyzed by using these indices and the taxi trip datum.

本文以出租车车载智能卡采集的载客行程时间数据为基础，研究提出新的单位距离行程时间可靠性评价指标和方法，并使用该指标和方法对北京市路网的可靠性水平进行实例评价。

The vertical axis of the switch has a surface of positive first differential, comprised of splines drawn between points if varying distance from a datum plane, and has along the horizontal axis a surface of a positive first differential and negative second differential, comprised of a combination of splines drawn between points of varying distance from the datum plane.

开关的竖直轴线的表面具有正的一阶微分，其由多个在离基准平面不同距离的点之间绘制的样条构成，并且沿水平轴线具有一个表面，该表面具有正的一阶微分和负的二阶微分，其由一组在离基准平面不同距离的点之间绘制的样条构成。

During construction of Donghai Bridge of Yangshan Deep-water Port, bedrock bench mark, which is an important surveying datum mark, played an important part in control survey and elevation transmission.

基岩标是重要的测量基准设施，在洋山深水港东海大桥的工程建设中发挥了控制测量与高程传递的重要作用。

As we known, common Loran - C receiver employs a fixed da- tum - mark in order to avoid interference caused by skywave, as the SNR is often poor at this point due to the amplitude limit of the pulse envelope, so it greatly increases time for tracking the datum - mark.

常规接收机为了防止天波干扰，将基准点设置在一个固定位置上，导致基准点处信噪比受包络限制而较低，从而大大增加了对准基准点的时间。

In the chapter 2, the theoretic knowledge about the photosensitive resin and the grinding tools was firstly introduced.

第二章阐述了光固化树脂结合剂磨具的相关理论研究。

Do not use the program's indenting or margin-setting features; these will be added during typesetting.

不要使用缩排，页面边缘设置之类的选项，偶看不大懂。