... sample trial 样品试验 sample uncertainty 取样不定性; 抽样不定性 sample unit 样本单位 ...
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uncertainty sample survey 不确定性样本调查
·2,447,543篇论文数据，部分数据来源于NoteExpress
In August 2012, results indicated that uncertainty was rampant with about one third of the sample more optimistic, another third less optimistic, and the final third no change (see Figure 1).
FORBES: Bulls, Bears, and CMOs: Predicting the Future of Markets
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