panel survey
... 1 重复调查(Repeated Survey) 2 同样本调查(Panel Survey) 利用同一样本作长期的观念调查,以集中力量于样本变化研究上。又称追纵调查(Logitudiual Survey)。 ...
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同样改变的是旅游公司的调查样本，报告显示1月份的假日花销只增长了3.7%，而去年同期这一数字是16.7%。
It also changed its sample of tourism companies, reporting that holiday costs had risen by only 3.7% in January, compared with 16.7% in the same month last year.
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