It follows by sampling frame and sampling strategy which discuss how to get the correct and precise sample in the study.

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。

According to the date of basic units census, this paper designs the sampling frame about the sampling survey of enterprises below designated size in wholesale and retail sale trades.

本文以全国基本单位普查资料为依托，对规模以下批发和零售贸易业抽样调查的抽样框进行设计，设计的思路和方法对其他小企业的抽样调查也具有一定的参考价值。

A fast sampling frame memory of structured light distribution is de- signed, because of the use of large size RAM and preprocessing of the structured light distribution, the circuits is very simple.

设计了一种用于结构光分布图采集的图像帧存贮器（RAM）电路。 由于预先对结构光分布进行了硬件细化处理以及大容量存贮芯片的使用，电路设计十分简单。

Entire drive device is set up on frame of sampling machine.

整个传动装置均设在采样机机架上。

Install the frame of sampling machine that coincides with the frame of belt conveyor.

采样机机架设置在带式输送机机架两侧，整个传动装置均设在采样机机架上。