random sampling造句

• Abstract : structural system reliability is dealt with by monte carlo integration using systematic descriptive sampling is applied instead of the random sampling in the monte carlo procedure
  文摘:在用蒙特卡罗法计算结构系统可靠性时，运用了系统描述性抽样法。
• In such problems , there are too many test cases to evaluate all the candidates , and a random sampling of test cases can be uninformative
  在这类问题中，对于所有的候选解而言，由于其数目太多而无法对它们进行评估，而且随机的测试事例采样也不能提供有用的信息。
• The fifth part is an investigation on the present situation of english education in the kindergartens in the main urban districts in chongqing by adopting stratified random sampling
  第五部分运用分层随机抽样的方法，对重庆市主城区幼儿园英语教育现状进行了调查。
• Method three thousand and eighty - sevedn beijing citizens from various areas were selected by using stratified random sampling and were surveyed by the questionnaires
  方法采用多阶段分层随机抽样的方法，应用自行设计的调查表，调查不同地区的北京市民，共回收有效问卷3087份。
• Based on the sampling error in the normal random sampling and layered sampling , the methods of determining sample volume and selecting of sampling themes are studied
  对于一般随机抽样与分层抽样根据给定的抽样误差确定抽样量，探讨样本容量的计算方法和选择抽样检验方案的方法。
• High - speed random sampling of high - speed digitizing storage oscilloscope is discussed in this thesis and which are mainly analysed in the time - domain and the frequency - domain
  本课题研究对象是高速数字存储示波器的高速随机取样变换技术。主要从频域和时域两个方面加以分析论述。
• At the other end of the spectrum , high - error - rate ( 4 percent ) random sampling of the genome has proved useful for discovery and classification of various rna and tissue types
  从另一角度来看，对基因组随机取样定序，即使误差高（ 4 % ） ，却对发现和区分各种rna和组织类型极为有用。
• You can test package execution and data transformation with richly representative data , but more quickly because a random sample is used instead of the full dataset
  这样，您就可以使用很有代表性的数据来测试包执行和数据转换，而且这种测试更加快捷，因为它使用的是随机样本而不是全部数据集。