本文主要研究过抽样转换及其数字信号处理的原理，设计和应用。
This thesis mainly focused on the principle, design and application of the digital signal processing which was based on oversampling converter.
研究人员必须从病毒流行过城镇中的人群中抽样取血以确定被病毒感染而未被发现的人数。
Researchers must draw blood from a sample of people in affected towns and cities to estimate how many people were infected and never knew it.
1984年和1996年分别开展过两次糖尿病抽样调查。
Two sampled surveys on diabetes were conducted respectively in 1984 and 1996.
但是，“这或许是说，比起别的事情来，对猪流感的抽样调查更为缺乏，”爱丁堡大学研究过猪流感的病毒遗传学家安德鲁·兰鲍特表示。
But "that probably says more about the lack of sampling in pig flu than anything else," said Andrew Rambaut, a University of Edinburgh viral geneticist who has studied swine flu.
但是，“这或许是说，比起别的事情来，对猪流感的抽样调查更为缺乏，”爱丁堡大学研究过猪流感的病毒遗传学家安德鲁·兰鲍特表示。
But "that probably says more about the lack of sampling in pig flu than anything else," said Andrew Rambaut, a University of Edinburgh viral geneticist who has studied swine flu.
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