They went to a day-labor employment agency armed with questionnaires for a sample of workers to fill out confidentially.
他们带着一套问卷去了一家短工职介所，让一组工人填写这套问卷并为其保密的。
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。
By the analysis on the sample investigation data, this paper taking the female labor in rural as research object studied the female labor's outgoing of Subei rural carefully.
本文选择了苏北地区女性作为研究对象，通过对抽样调查数据的计量分析，对苏北地区农村女性劳动力的外出现象进行了深入细致的研究。
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