background value

       
  • 背景值

background value的用法和样例:

例句

  1. The background concentrations of ambient air pollutants were used as evaluation stan-dards.
    采用大气污染物浓度的背景值为评价标准。
  2. In the Campania region, baseline and background values are often coincident, where the samples represent catchment basins away from urban or industrial areas.
    在坎帕尼亚地区,样品代表的是远离市区或者工业区的汇水盆地,所以基线值和背景值经常是吻合的。
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