测量误差

In the model of intersection, the instruments had to be levelled and orientated relatively by aiming at mutually. Because levelling is manual and there is no mark of theodolite′s center which can be aimed at, the error of the common method of self-locating is too big to be allowed for precisional indus trial measuring.

前方交会这种自定位方式，必须先整平仪器，并使两台仪器相互瞄准实现相对定向，由于整平误差和定向误差，使得这种自定位方式的精度无法提高，严重阻碍了此系统用于精密工业测量。

Based on the measurement of salt content and electrical conductivity in soda solonetz soil as well as in groundwater in Da'an City,Jilin Province,the relationship between the salt content and electric conductivity was determined.

利用方程计算的土壤含盐量与实测值之间符合较好，相对误差大多在7%以下；根据电导率计算的地下水含盐量与实际测量值之间的相对误差一般在5%以下。

A method of real time dynamic weight during intersection measure of two unequality precision theodolites is presented.

分析了误差来源和典型情况下的误差情况，提出了在不等精度经纬仪交会测量中，实时确定两台光电经纬仪在解算结果中的权重，动态改变权值的方法。

This paper has described the basic function and qualification of the compensating brake master cylinder admeasuring apparatus firstly, given an introduction of gross structure, measuring principle and method, put its emphasis on the dissertation of working principle of main composing parts, such as endoscopic-micro optical system, CCD pick up camera and precision machinery system, and on the design of optical imaging system. It has analyzed the main error and the influence on measuring accuracy as well as giving a conclusion of error analysis.

本文首先叙述了制动主缸补偿孔测量仪的基本功能和技术指标，接着介绍了仪器的总体结构、检测原理与方法，重点对系统的主要组成部分，如内窥显微光学成像系统、CCD摄像机和精密机械系统等的工作原理进行了论述，并对光学成像系统进行了设计，最后分析了系统的主要误差来源及其对系统检测精度的影响，并给出误差分析结论。

According to the experiences of experiment teaching,we have developed a kind of measuring diameter instrument used in error statistics and analysis in auto lathe of single axle and high precision grinding machine.

根据实验教学的经验，研制了一种用于单轴六角自动车床和高精度通磨无心床做加工误差统计分析的实验教学使用的千分表测径仪，并对几批车削工件和磨削工件进行现场测量，并进行加工误差的统计分析。

Research conclusions:In the repetition survey for precise control of outside tunnel, it can be verified whether the result of repetition survey meets the requirement of construction accuracy or not through making comparison of the distance with azimuth of corresponding baseline.

研究结论：在隧道洞外精密控制测量的复测中，对组成的同名基线进行距离和方位角对比，可以很快验证复测成果是否符合施工精度要求；同名基线的验证方法可以有效地反映观测误差对隧道横向贯通误差的影响；工程实践证实，同名基线对比分析可避免过于繁琐的内业工作，及时确保施工安全和进度。

Clock error is the main and direct source of errors in network measurement.

时钟误差是网络测量中最主要的直接误差来源。

The results revealed that 1% deviation of scale factor in a certain axis would result in an angle error of about 17′,and the reading error cause...

研究表明，某轴测量通道1%的比例因子偏差将造成约17′的读取姿态误差，电极轴不正交造成的读取误差与不正交的程度约在同一数量级。

Emphasis is placed on analyzing the influences of friction characteristics on hydraulic motor, dynamic coupling between gimbals, resolution ratio error and setting error of feedback measurement element on accuracy of electro-hydraulic position servo system for a certain simulation turntable.

针对具体的仿真转台电液位置伺服系统，着重分析了液压马达摩擦非线性、框架间动力学耦合、反馈测量元件的分辨率误差和安装误差对转台电液位置伺服系统精度的影响。

During the process of camshaft measurement, the phase datum of the key pin or the locating pin can be determined precisely by using the minimum error method of curve symmetry and the cam nose position can be determined by using the minimum error method near the" sensitive point".

在凸轮测量中，采用曲线对称最小误差法，可精确确定键销或定位销的相位基准；采用&敏感点&附近最小误差法，可精确确定凸轮&桃尖&位置。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。