Little has been said about purpose sampling which is used much more in practice.
对使用较多的有目的抽样则阐述较少。
Method Purpose sampling combined with quota sampling were adopted, and the data of nursing quality assessment standards of 17 hospitals in China were obtained and analyzed.
结果各医院评价标准所涉及的评价指标不尽相同，同一指标的评价标准条目设立、权重设定差异均较大，且尚无统一的计分方法。
Purpose To solve the problem of sampling within household in resident health survey and generate a representative sample.
目的解决居民健康调查中入户后的抽样问题，产生代表性较好的研究样本。
And according to actual need a plurality of different numerical sampling voltage can be created, thus to achieve the purpose of different depth of discharge.
并且可根据实际需要再增设多个不同数值的取样电压，以实现不同深度放电的目的。
The invention can achieve the purpose of sampling accurately in constant speed.
本发明可精确实现等速取样的目的。
The chromatographic columns, mobile phases as well as detecting devices and sampling devices used in HPLC for this purpose were described.
同时，介绍了分析所用的色谱柱、流动相、使用的检测手段以及样品的提取方法；
This work is part of the design of 500M sampling Digital Storage Oscillograph and the assignment is to develop the GPIB(General Purpose Interface Bus)instrument driver.
由于示波器是自主研发的，要开发示波器仪器驱动器，首要的任务就是实现仪器和测控机的接口通信。 我们在总体设计上采用GPIB通信协议。
This work is part of the design of 500M sampling Digital Storage Oscillograph and the assignment is to develop the GPIB(General Purpose Interface Bus)instrument driver.
由于示波器是自主研发的，要开发示波器仪器驱动器，首要的任务就是实现仪器和测控机的接口通信。 我们在总体设计上采用GPIB通信协议。
应用推荐