查询词典 sampling cell

Then we suggested the technology of sequential sampling and theoretical sampling and distribution points of random sampling of the loose smut of wheat by using the Iwao and Kuno and Green and Iwao-Kuno methods which may be useful for reference to forecast and control this disease.

用Iwao、Kuno、Green和Iwao-Kuno方法研究，提出了序贯抽样技术、理论抽样数和随机抽样分布点，以供在测报和防治工作中参考。

Most commonly, it begins with random cluster sampling and then applies simple random sampling or stratified random sampling

最常见的是，从随机整群抽样开始，然后应用简单随机抽样或者分层随机抽样

The sampling population of this study is girls at five-year, two-year, four-year and two-year technology of a selected college of commerce in Taipei City in stratified random sampling selection with class as sampling unit. A total of 424 girls are included in the formal survey and 405 valid questionnaires collected.

本研究以国立台北市某技术学院在学日间部五专、二专、四技、二技等学制女学生为抽样母群，采分层随机丛集取样方式，以班级为取样单位，正式施测时共抽取424人，有效问卷405份。

Systematic grid sampling is the most popular method at present, but it could loss some important distribution information. Systematic unaligned sampling is the most ideal method. It is easy to find periodical distributing field information with systematic unaligned sampling method.

其中规则栅格采样是目前最常采用的方法，但容易丢失一些比较重要的分布信息；系统分层采样是最理想的方法，容易发现具有周期性分布的农田信息。

Methods 962 households in three regions of Baoding city were selected for the household survey through two stage sampling method - random cluster sampling and systematic sampling.

通过两阶段抽样方法调查保定市南市区、北市区和新市区 96 2户居民的健康状况和卫生服务利用情况。

Methods 962 households in Baoding City were selected for the household survey through two stage sampling method_random cluster sampling and systematic sampling.

通过两阶段抽样方法(随机整群抽样和系统抽样)调查了河北省保定市南市区、北市区和新市区 3个区的 962户居民的卫生服务利用情况，采用调查表的方式入户调查，并将被调查家庭分成 3组：相对贫困组、贫困临界组和一般家庭组进行公平性分析。

In section 2, if φ satisfies some conditions, a result is obtained that f can be reconstructed from the sampling values when the sampling set is Z or the sampling set is a small perturbation of Z.

在第二节，我们证明了若φ满足适当的条件，采样节点为整数节点或采样节点为为整数节点的微小扰动时，函数能够由其采样值稳定而且唯一的重建。

First, this paper gives an introduction of some methods of unequal probability sampling, their estimators and variance estimators, including sampling with pps with replacement, methods of sampling without replacement suggested by Brewer, Durbin, Sampford , Des Raj , Murthy , Rao-Hartley-Cochran. Then, at the basis of Rao and Bayless's study , we consider that population can be splited two random subpopulations, which are respectively drawn from different infinite super-populations, and compare the stabilities of estimators of the methods that given above.

本文首先从理论上介绍了若干种不等概率抽样方法，它们的估计量、估计量的方差及其估计，其中包括有放回PPZ及PPS抽样，不放回不等概率抽样中的Brewer、Durbin、Sampford、Des Raj，Murthy、Rao-Hartley-Cochran等人的方法；其次，在Rao和Bayless两人就样本单元数n=2的情形对上述抽样方法进行比较的基础上，将总体随机地分成两个子总体，视每个子总体取自不同的线性超总体，在文中，我们利用计算机实现随机分组，并通过画图比较各方法估计量的稳定性，结果表明，对变异系数C.V。

First, this paper gives an introduction of some methods of unequal probability sampling, their estimators and variance estimators, including sampling with pps with replacement, methods of sampling without replacement suggested by Brewer, Durbin, Sampford , Des Raj , Murthy , Rao-Hartley-Cochran.Then, at the basis of Rao and Baylesss study , we consider that population can be splited two random subpopulations, which are respectively drawn from different infinite super-populations, and compare the stabilities of estimators of the methods that given above.

本文首先从理论上介绍了若干种不等概率抽样方法，它们的估计量、估计量的方差及其估计，其中包括有放回PPZ及PPS抽样，不放回不等概率抽样中的Brewer、Durbin、Sampford、Des Raj，Murthy、Rao-Hartley-Cochran等人的方法；其次，在Rao和Bayless两人就样本单元数n=2的情形对上述抽样方法进行比较的基础上，将总体随机地分成两个子总体，视每个子总体取自不同的线性超总体，在文中，我们利用计算机实现随机分组，并通过画图比较各方法估计量的稳定性，结果表明，对变异系数C.V。

By utilizing the theory of numerical processing, digital frequency spectrum analysis and multi-rate digital signal processing, this paper focuses the research on mechanism of the testing error, the compensation of testing error in the field of sampling technology, nonsynchronous sampling, nonuniformly sampling, and puts forward some new analyzing, compensation and realization methods.

本论文通过运用数值处理、数字频谱分析和多抽样率信号处理的有关理论和原理，对采样技术、采样的非同步方式和采样的多通道方式中的测试原理、测试误差产生机理、测试误差补偿及其应用技术等主要环节进行了深入的研究，提出了一些新的分析与处理方法，建立了有关测试误差分析与补偿的预估理论和实现方法。

Don not attempt to do something which you can not to do.

不要企图做那些办不到的事情。

The expression of CTGF and TNF-αweredetected by immunochemistry and the number of Clara Cells was calculated.

光镜下观察肺组织的病理变化，采用免疫组化染色观察肺组织中结缔组织生长因子和肿瘤坏死因子-α的表达和Clara细胞的数量。