contamination concentration的用法和樣例：
例句
- The concentration sub-model shows that the pollutant concentration event only changes with the runoff event at the gully.
濃度子模型則反映了雨水口入流污染物濃度僅隨入流流量而變化。 - This chapter describes methods of estimating airborne pollutant concentration distributions associated with various emission sources.
本章論述幾種有關各種排放源的大氣污染物濃度分佈的估算方法。
