The statistic analysis was made for the relationships of the different dust concentrations of several personal job titles and relevant work fields, of different seasons, and of different factories.

对各工厂夏冬两季各工种以及各工作区域的空气粉尘平均浓度，进行工种浓度和区域浓度、季节和工厂之间的比较分析。

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Include the name and location of employers, job titles, dates, scope of responsibility and results or outcomes of your work.

包括雇主的名称和地点、职位名称、日期、责任范围以及工作的结果或成果。

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Include the name and location of employers, job titles, dates, scope of responsibility and results or outcomes of your work.

包括雇主的名称和地点、职位名称、日期、责任范围以及工作的结果或成果。

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