concentration of air pollution的意思|示意

The results show that (1) with the time change, the traffic has obviously change. (2) the concentration of air pollution and traffic have a close relation.

结果表明：(1)车流量随时间变化明显。路口的车流量以出租车占的比例最大。(2)污染物浓度与车流量有较为密切的关系。

Based on the box model used in atmospheric Science, Calculation of indoor air pollution concentration had been developed and it's effect factors were discussed as well.

在借鉴大气总量控制箱模式的理论基础上，探讨了室内空气污染物浓度的新的计算方法，并通过此模式对影响因素作了分析和分情况解释。

The concentration of arsenicum in coal was very high, and the internal air arsenicum pollution was serious.

居民燃用的石煤砷含量极高，其居住室内砷污染严重。

China has vowed to launch its strictest environmental protection system and reduce the concentration of PM2.5 particulate pollution in cities with poor air quality by 18 percent by 2020.

中国已承诺施行最严格的环境保护条例，并预计在2020年之前将严重污染城市的PM 2.5颗粒污染浓度降低十八个百分点。

Air pollution prediction is a direct problem, and deriving diffusion coefficients from the concentration of pollutants is an inverse problem.

空气污染预报属于正问题，而从污染物浓度来求解扩散系数则属于反问题。

Monitoring of particulate matter concentration is the basis for urban air quality evaluation and pollution control, and also very important for health effects assessment.

颗粒物浓度监测不仅是评价城市空气质量的基础，而且是进行城市污染控制与环境健康效应评估的重要依据。