精度

In view of the principle of pointbypoint comparison method, the foundation deciding whether the middle point interpolation is the control step error of NC system has been advanced, the math mould of inserting and compensation method established and the function that judges error by interpolating method has been improved.

基于逐点比较法原理，提出中点插补算法作为数控系统控制步进的偏差判别依据，建立了插补算法的数学模型，对插补算法偏差判别函数进行了改进和完善。实例分析结果表明，中点插补算法使插补精度由原来的小于等于一个脉冲当量提高到小于等于 0 。5个脉冲当量，插补点大幅度地下降，系统的响应速度加快和插补精度提高

The results indicated:（1）the combination of the Markov and spatial logistic models can improve the predictability of each model individually. In macroscopic scale, the total land use amount can be predicted via Markov chain; in microscopic scale, the multi-class multinomial logistic model can be used to implement the combined calculations of categorical variable and continuous variable, qualitative variable and quantitative variable to improve the precision of spatial regression. Meanwhile, the transition probability of each land use unit will be confirmed and the prediction of land use spatial distribution will also be completed.（2）the application system developed in accordance with the integrated model can effectively simulate and predict the land use evolution in Shenzhen City, and the prediction precision of verification system will suffice for recent land use monitoring and the making of annual land supply planning.

研究结果：（1）空间Logistic和Markov模型集成可提升单一模型的应用能力，宏观上利用Markov Chain进行土地利用规模总量预测，微观上利用多分类Multinomial Logistic模型解决分类变量与连续变量，定性变量和定量变量的联合解算提高空间回归精度，同时可以确定每一个土地利用单元转移概率，实现土地利用空间分布的预测；（2）基于集成模型开发出的应用系统能够有效仿真和预测深圳市土地利用演化，通过验证系统预测精度能够满足近期土地利用预警和年度土地供应计划编制。

The simulation results show that the proper selection of sampling frequency numbers and time interval can keep the simulation process fast, efficient and precise, which overcome the shortcomings of long time cost and low precision in the traditional method.

仿真结果表明，适当选取采样频率点数与时间间隔，可以在保证模拟功率谱计算精度的同时，具有快速高效的特点，弥补了传统方法在模拟三维风速时耗时长、精度低的缺点。

Devices in the test package include: a high-precision automated dimensional gauge designed for measuring the unique attributes of bottles, particularly threaded and crown finishes as well as weight and pushup; a pressure tester for performing buckle and bottom roll out tests; a dual-purpose tester that performs both fill point volume measurements and top-load tests; and a thickness gauge for high accuracy measurement of material distribution.

该成套测试仪器的装置包括：一种用于测量瓶子独特属性的高精度自动化尺寸测量仪器，特别是对螺纹瓶口和皇冠盖瓶口，以及重量和瓶子凹底的测量；一个用于进行凹凸和瓶底压平测试的压力测试器；一个进行灌装点容积测量和最大负载测试的双重目的测试器；一个高精度测量材料分布的测厚仪。

Calibrations of pyrometer wavelength function and measuring precision the color pyrometer' are realized.

对比色高温计的波长函数和测量精度进行了标定，校验结果表明在800℃~3500℃范围内的测量精度为1%。

The equations of radiometric accuracy and software are given.

本文给出航天遥感器的辐射度精度公式，并建立航天遥感器的辐射度精度计算软件。

Radar rainfall estimation combined with a few rain gauges has as good result as dense rain gauge network does in runoff simulation that gives a good prospect of radar application in flood monitoring and forecasting.

2雷达联合少量雨量计估测降水用于流域径流模拟时，模拟精度和用稠密雨量计网模拟的精度接近，显示雷达在流域径流模拟和洪水监测预报中有相当高的应用价值。

The QPF results, before and after the mean-field bias adjustment using a multiplicative factor determined based on radar–rain gauge comparisons of the last hour, were compared using rain gauges.

用外推开始前1小时的雷达1小时累积降水和雨量计测值计算平均校准因子，对外推得到的雨量场进行校准后，可以明显提高外推1小时流域面雨量的精度，对外推2小时流域面雨量的精度也有所提高。

In this study adopting the inverse distance weighted to deal with the rain gauge by interpolation, obtaining the rain capacity in every quarter in Minjiang watershed. Kriging interpolation was employed to get the spatial date base of temperature factor and the overall precision reached 95% by external module examination.

2本研究以反距离权重插值法对降雨线的进行内插处理，获取闽江流域各季度的降雨量，温度因子栅格空间数据库采用泛克里格插值获得，经模外检验精度较高，总体精度都达到95％以上。

The QPF results, before and after the mean-field bias adjustment using a multiplicative factor determined based on radar–rain gauge comparisons of the last hour, were compared using rain gauges. Results show that the QPF results after the adjustment were better than the QPF results before the adjustment.

用外推开始前1小时的雷达1小时累积降水和雨量计测值计算平均校准因子，对外推得到的雨量场进行校准后，可以明显提高外推1小时流域面雨量的精度，对外推2小时流域面雨量的精度也有所提高。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。