background concentration

常见例句

The plume of carbon monoxide over the Pacific Ocean is easy to see against the lighter background concentration of the gas over the ocean.
在轻微气流聚集的太平洋海平面之上，一氧化碳的烟羽很容易看到。
In the model the contribution from area pollution sources was calculated by transforming it to the background concentration, so the model was greatly simplified.
在模型中尝试性地将面源污染产生的浓度贡献转化到背景值中计算，简化了解析模型。
To investigate the impact of chamber ambient air quality on the testing results, mathematical analysis is performed to study the vibration trends of formaldehyde background concentration.
为了解气候舱周边空气质量对检测结果的影响，本文应用数学分析方法对气候舱内空气中甲醛本底浓度的变化规律进行了探析。