通过抽样框架和抽样策略，讨论如何在研究中得到正确准确的样本。
It follows by sampling frame and sampling strategy which discuss how to get the correct and precise sample in the study.
该设计采用了场强抽样测量和DSP语音数字压缩技术，建立了完善的硬件实现和网络通信协议框架。
Field intensity measuring, DSP numeralization and speech compression technology have been applied into the system design. Hardware implementation and communication protocol frame were established.
以“三同”抽样检验制度为分析对象，提出了基于数据挖掘技术的热轧带钢抽样检验优化框架。
As a case study, the Santong sampling testing system is analyzed, and a data mining based optimization architecture of sampling testing for hot rolling stripe is presented.
以“三同”抽样检验制度为分析对象，提出了基于数据挖掘技术的热轧带钢抽样检验优化框架。
As a case study, the Santong sampling testing system is analyzed, and a data mining based optimization architecture of sampling testing for hot rolling stripe is presented.
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