查询词典 sampling method

In order to know Beijing urban residents' consciousness of tax-paying, recognition and sense of individual income tax and the understanding for the burden condition of individual income tax, this paper, on the basis of adopting sampling questionaire investigation method of meeting by chance, takes the methods of descriptive statistics, correlation analysis, etc. to analyze the condition of Beijing urban residents' individual income tax, and points out that the propaganda of the tax system is not good enough...

为了解北京市居民的纳税意识、对个人所得税的认识和感觉以及对个人所得税负担状况的理解，在采用偶遇抽样问卷调查方法的基础上，使用描述统计、相关分析等方法对北京市居民个人所得税状况进行了分析，针对我国个人所得税制的宣传力度不够，多数人不了解个人所得税的计算，以及统计口径不适合目前分析需要的现状，提出统计口径宏观测算方法和统计调查的改进意见，以期对北京市的税收建设有所帮助。

This study was conducted in Taiyuan sewage irrigation area from 1997 to 2000.The research process included field investigation, sampling, lab test, model experiment and data analysis by geo-statistics method. The source, affecting factors, content condition, transference regularity, spatial distribution of heavy metal in sewage irrigation area were studied. The results showed that mercury, cadmium and lead contents of soil were higher than soil background value.

本文以在中国北方具有代表性的太原污水灌溉区为研究对象，污灌区位于山西省中部的太原盆地北端，总面积2.7万公顷，在研究区共布土样点49个，粮食作物样33个，水样点26个，大气样点6个，通过实地调查取样监测和室内模拟试验，采用地统计学和多元统计等方法，系统研究了污灌区土壤-作物系统中重金属Hg、Cd、Pb的来源、含量状况、累积影响因素、空间分布特征、迁移转化规律、重金属环境容量的区域分异与应用等内容。

At last, we complete a sampling system to validate the rightness of the new resolution method.

最后，我们实现了一个尺寸标注系统完备性检查的原型系统，验证了上述原理和方法的正确性。

Using the method of tri-sampling, Fourier algorithm of full cycle and the algorithm of root-mean-square.

对三采样法、全周波傅式算法、均方根值进行了研究。

In chapter 10, we propose the random weighting approximation method for distribution of sample mean under simple random sampling in one-dimensional finite population.

第十章 将随机加权法首次应用到简单随机抽样方案下的样本均值分布逼近问题中，从数字特征角度说明了随机加权方法在抽样理论中的可用性，从而拓广了随机加权法的应用范围。

In order to solve the problems of sampling technology in spraying, a new measurement method of using micrograph combining with digital image processing technology for spraying deposition parameters analysis and sample in airtight space was given.

针对植保机械喷雾取样技术存在的不足，提出了利用显微图像结合数字图像处理技术对密闭空间中雾滴的沉积状态参数进行取样和分析的方法。

This paper introduces the distribution of sampling points and water sample analysis method and analyzes...

介绍了水质采样点的分布情况和水样分析方法。

This paper introduces the distribution of sampling points and water sample analysis method and analyzes pollution components of N, P and COD in water sample.

介绍了水质采质采样点的分布情况和水样分析方法。对水样中的N、P污染成份及COD进行了分析。

This paper presents a method for designing a sampling inspection plan for such a case.

本文提出了这种抽样方案的设计方法。

What is the best method of soil sampling for research work?

我们的研究中，最佳的采样方法是什么？

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。