Large-scale sample surveys are always undertaken with stratified multi-stage sampling.
大型抽样调查总是采用分层多阶段抽样。
According to some sample surveys, visitors tend to think, open the web faster higher quality, more reliable and more interesting.
根据一些抽样调查，访问者倾向于认为，打开速度较快的网站质量更高，更可信，也更有趣。
The data of total employees and employees by type of industry are estimated on the data collected from the sample surveys on labor.
全省从业人员人数及分三次产业从业人数根据劳动力抽样调查资料推算。
The Gallup World Poll conducted surveys on a wide range of subjects in a representative sample of people from 132 countries from 2005 to 2006.
盖洛普世界民意调查从2005年到2006年间，对132个国家民众的代表性样本就广泛的问题进行了调查。
Thee gallup world poll conducted surveys on a wide range of subjects in arepresentative sample of people from 132 countries from 2005 to 2006.
盖洛普世界民意调查从2005年到2006年间，对132个国家民众的代表性样本就广泛的问题进行了调查。 。
Surveys were developed and distributed to a randomly selected sample of 10,000 clubs to identify relevance and efficacy of current RI programs at the club level.
个扶轮社中以分散随机抽样来找出扶轮社层级目前国际扶轮计划所执行的适当性及有效性。
A balanced three-layer sample rotation pattern is presented in this paper to solve the problem of rotation for the quarterly surveys with three-stage sampling designs.
本文构造了一种平衡的三层次样本轮换模式，解决了三阶段抽样季度调查的三层次样本轮换问题。
The use of flurospectrometry to determine vitamin A in human serum is shown to be sensitive, accurate and needs a lesser amount of sample. It is suitable for nutritional surveys of large populations.
使用荧光分光法测定人体血清中维生素A灵敏、精确、取血量很少、适合大规模人群营养调查。
The use of flurospectrometry to determine vitamin A in human serum is shown to be sensitive, accurate and needs a lesser amount of sample. It is suitable for nutritional surveys of large populations.
使用荧光分光法测定人体血清中维生素A灵敏、精确、取血量很少、适合大规模人群营养调查。
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