survey accuracy

We gather a set of economically feasible technical criteria on linearity 、 squareness 、 deflexion 、 pitch and oscillation of sliding guide etc, and make the survey accuracy of the machine tool hit 63.2 μ m, and meet accuracy requirement.

在各导轨的直线度、垂直度、导轨运动时的偏转、俯仰、摆动等方面得出了一组经济可行的技术指标，使机床的测量误差小于63.2μm，满足了精度要求。

Quality Control and Accuracy Analysis of Base Map Production for the Second Land Survey of Guangdong Province

广东省第二次土地调查底图生产成果质量控制及精度分析

Accuracy Analysis of Trigonometric Leveling by Total Station in Precise Engineering Survey

精密工程测量中全站仪三角高程精度分析

A method called relative benchmark is used in cable duct survey in order to improve the accuracy of orientation.

采用相对基准法对索道管定位，保证定位精度和提高施工进度。

With the use the system, the amount of stockpiled coal can be calculated through direct processing of the data obtained from traverse survey. Hence the accuracy is much enhanced and the process is speeded up due to absence of intermediate manual calculation link.

本系统对现场观测的煤堆导线观测数据直接进行处理，算出落地煤量，减少了手工计算的中间环节，提高了煤量计算的精度和速度。

Analysis of Relations between Optical Time Domain Reflectometer's Survey Range and Accuracy in Optical Fiber Telecommunication

光时域反射仪测试范围与光纤线路测试精度分析

Selected cases of epilepsy, pre-clinical investigation, according to pre-survey results, statistics "epileptic syndromes Clinical Investigation Form" in the absence of the entry rate, and the dialectical survey accuracy of the results, adjust the diagnosis threshold.

选取癫痫病例，进行临床预调查，根据预调查结果，统计《癫痫中医证候临床调查表》中各条目的缺失率，并对调查表的辨证结果进行准确性评价，调整确诊阈值。

Analysis and Discussion on Geographic Accuracy in Survey of the Terrain

地形测图中地理精度的分析与探讨

The survey precision and accuracy are confirmed by error analyses.

经过误差分析，确立了测量的精度和准确度。

The affiliation of the electronic balance for mass measurement, vacuum gauge for pressure measurement, and the thermocouple for temperature measurement increase the accuracy of measurement of experimental, and realize the rapid survey of quality, pressure and temperature.

加入了测量质量的电子天平、测量压强的真空规管以及测量温度的热电偶，并提高了实验装置的测量精度，实现了质量、压强和温度的快速、自动测量。

This paper introduces the accuracy of 1:500 mapping using 1:3000 airphoto for City cadastral surveying. The statistical data show that the mean square error of object survey points is ± 0.173 meter.

本文介绍了地籍测量作业中利用1∶3000像片测绘1∶500图的精度，统计资料表明物点点位中误差为±0.173米。

This paper expounds the working principle and step requirements of holing-through survey of well lane, and advances several considerations about increasing the holing-through accuracy of the well lane according to the working experience.

阐述了井巷贯通测量的工作原则和贯通测量的步骤要求，并根据工作经验提出了提高井巷贯通精度的几点体会。