查询词典 sequential sampling plan

A stratified random sampling method, cluster-sampling unit, was adopted to select the required student samples which included 421 students from 14 primary schools, 462 students from 15 junior-high schools, and 623 students from 16 high schools in Kaohsiung, Taiwan.

本研究以分层随机抽样方式选取高雄地区45所学校共1516名学生，包含14所国小共421人、15所国中462A、16所高中623人。

A 1∶250 00 standard map sheet (about 91 km 2) is used as a sampling unit in the western China's Xinjiang Uygur Autonomous Region and one county is used as a sampling unit in eastern China.

在黄淮海、长江中下游棉区采用县为单元的分层抽样的方法，抽样样本用遥感调查的方法获得。

Moreover, during the radar signal generation, static and dynamic characters of backscattering coefficient are set up, and time sampling of each clutter unit is computed with voltage character and power spectrum character, and the sampling signals are added in every distance gate to output time series. In addition, noise is modeled with a function of Gaussian stochastic process.

在雷达信号模拟中，建立了杂波后向散射系数的静态和动态特性，从杂波的幅度统计特性与功率谱特性入手，计算了每个杂波单元的时域采样，按照对应的距离门叠加各个距离模糊间隔上的回波信号并形成时间序列，并采用一个高斯随机过程的样本函数来表示噪声模型。

Single chip ; Power unit ; AC sampling ; Hardware synchronous sampling

单片机；发电机组；交流采样；硬件同步采样

Stratified random sampling and simple random sampling methods were used to select sample from 14 counties.

通过分层抽样和单纯随机抽样相结合的方法，抽取昆明市14个县的部分参合农民进行问卷调查。

Methods The integration of simple random sampling and stratified sampling was adopted to select 480 soldiers of 5 different branches of the military forces stationed in Jinan as study objects.

采用简单随机抽样和分层抽样相结合的方法抽取驻济5个兵种不同的部队，计480名军人作为研究对象。

In principle, layered random sampling and simple random sampling were used.

取样原则采分层随机抽样和简单随机抽样方式，共抽取12所学校，抽样得70个班级，含68位教师与其班级学生共754人，回收的有效样本共计70班，合计68位级任教师与739位学生。

Consequently, investigated in detail are several concrete complementing schemes based on simple random sampling, stratified sampling.

摘要本文研究了不放回追加策略，包括基本设计和域追加设计都为简单随机抽样、分层随机抽样情形下不放回样本追加时域的估计的问题。

Results showed that Latin Hypercube sampling can capture more variability in the sample space than simple random sampling especially when the number of simulations is small.

LANDIS模型的模拟结果表明，由地统计学随机模拟所引入的不确定性在象元尺度上随模拟时间增加而增加，但是在景观尺度上并没有受很大影响。

In this article,students actually present at exams are regarded as simple random sampling of all the students,and the sampling and assessing ways are applied.

将实考考生看作为考生总体的一个简单随机样本，应用抽样估值的方法，在若干合适的概率分布模型下，收集和推演了考生总体合格率的一些估计公式，以估计有考生缺考时，考生总体的合格率。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样