Methods to perform the statistical analysis on the data of 2000 to 2005, and to draw the line graph to view the trend of unqualified constitute ratio.
方法统计2000 ~ 2005年的检测资料，绘制折线图直观显示各项目不合格构成比变化趋势。
Methods to perform the statistical analysis on the data of 2000 to 2005, and to draw the line graph to view the trend of unqualified constitute ratio.
方法统计2000 ~ 2005年的检测资料，绘制折线图直观显示各项目不合格构成比变化趋势。
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