The amount by which something, especially a pollutant, exceeds a standard or permissible measurement.
某种物体的数量，尤其是指污染物，超过测量标准或是可容许的程度。
Sulfur dioxide, a major contributor to acid rain, is an especially serious pollutant because it diminishes the respiratory system's ability to deal with all other pollutants.
二氧化硫是酸雨的主要成因之一，它是一种特别严重的污染物，因为它会降低呼吸系统处理其他污染物的能力。
The experimental results of a full-size combustor show that the influence of humid air on pollutant emission is different for hydro-carbon fuels and synthesis gas, especially on co emission.
全尺寸燃烧室的实验结果表明，空气加湿对于碳氢燃料与合成气火焰污染物排放的影响不同，尤其是对CO排放的影响。
As a result of chemical conversion and decay, the primary pollutant decreases with the downwind distance more rapidly, especially as the mesoscale distance further than 10 km.
由于化学转换和衰减的作用，初生污染物随着下风距离而较快地减少，特别是在10公里以后的中距离上更加明显；
As a result of chemical conversion and decay, the primary pollutant decreases with the downwind distance more rapidly, especially as the mesoscale distance further than 10 km.
由于化学转换和衰减的作用，初生污染物随着下风距离而较快地减少，特别是在10公里以后的中距离上更加明显；
应用推荐