抽样法

Firstly, the outage model of components is decided; then based on the load variation curves of load nodes the sampling, calculation and analysis of various system states are performed by enumerative sampling method.

首先确定元件的停运模型，然后以各负荷点的负荷变化曲线为基础采用枚举抽样法对各系统状态进行抽样计算与分析。

The result indicates that the BCPB method is the better approach among four bootstrap methods for process comparison due to its stable error probability and larger selection power with a fixed sample size.

所以在这四种复式抽样方法中，BCPB之复式抽样法为表现比较好的方法。

Illustrations are used to analyze the limitation of line sampling firstly. For linear limit state, the efficiency of LS is affected by the dispersion of the actual important direction from the optimal one, the bigger the dispersion is, the lower the efficiency is. For non-linear limit state, in case that the actual important direction deviates from the optimal one greatly, the efficiency and the precision of LS decrease seriously, even wrong results are obtained.

首先通过算例分析线抽样方法存在的问题，对于线性问题，线抽样法的效率受抽样重要方向与最优重要方向偏离程度的影响，这种偏离程度越大，效率越低；而对于非线性问题，当抽样重要方向与最优重要方向偏离较大时，线抽样的效率和精度均严重下降，甚至得出错误的计算结果。

Methods Proportional probability sampling method was used to randomly sample 1 200 pupils from 30 counties in Henan Province.

方法采用人121比例概率抽样法分阶段抽样。

The survey conducted in Taiwan was designed using a multiple-stage sampling method that utilized the principles of probabilities proportional to size, stratified sampling, and systematic sampling to strengthen the sample's effective representation.

为符合研究的需要，本次研究的抽样方法采取较复杂的多阶段抽样法，主要应用「抽取率与单位大小成比例」原则，结合分层抽样、等距抽样等抽样方法的优点，以求提高样本代表性。

Third, we conducted in-depth interviews of 8 persons in 9 times, who were sampled by quota sampling method.

最后以配额抽样法在研究场域针对调解人、召集人与公正人士共抽样8人做9次的深度访谈，得以架构出研究概念并整理研究发现。

Based on the mutual fund market share of companies in the investment trust industry, quota sampling method was adopted to determine the sample size. The questionnaire survey was conducted with the convenience sampling method, using electronic questionnaires to collect primary data. A total of 423 questionnaires were distributed and 400 effective questionnaires were collected, comprising the effective return rate of 94.56%.

根据投信公司的基金规模市场占有率，采用配额抽样法分配抽样之样本数，每一投信公司依分配之样本数以便利抽样法选取受访者，以电子问卷作为搜集初级资料的工具，共计发出问卷423份，回收有效问卷400份，有效回收率为94.56%。

It used Quota Sampling with target subject group of local residence in Taipei district of TenMou, collected 265 valid surveys, went through numerous allocation, factor analysis, ANOVA analysis, Regression analysis, and Chi-square test analysis of variance population, characteristic and life style,shops' image, motivation in purchase with satisfaction and return purchases.

使用配额抽样法，以台北市天母地区的民众为抽样对象，回收有效问卷228份，经次数分配、因素分析、ANOVA分析、回归分析、卡方检定对人口统计变数、生活型态、商店形象、购买动机与满意度及再购意愿进行统计分析。

We brought forward and studied some generally directive problems such as sample biasing and complexity of IS.

本文提出并研究了重要性抽样法研究中的一般性问题，包括重要性抽样法的样本有偏性和复杂性的概念。

A type of probability sample in which aggregations of sampling units, called clusters, are sampled at some stage in the process.

是一种将样本单元聚集在一起的随机抽样法。样本群在抽样的某一步骤被抽出。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。