permissible concentration

基本解释

The low dust collecting efficiency of ESP system of clinker kiln results in that dust emission concentration exceeds permissible standard.
氧化铝熟料窑电收尘系统收尘效率低，导致烟尘排放浓度超标。
http://www.chazidian.com
This paper made some investigation about the permissible concentration limits about contaminations in roadway tunnel from the point of view of the effects on the body.
本文针对该隧洞的特点依据保障隧道内乘驶机动车各人员健康、卫生和隧道的营运安全为原则对污染物浓度设计限值进行了研究。
This Standard specifies the supreme permissible effluent concentration of flue dust, SO2 and nitrogen oxides as well as the emission limits of flue gas blackness by age limits.
本标准分年限规定了锅炉烟气中烟尘、二氧化硫和氮氧化物的最高允许排放浓度和烟气黑度的排放限值。
bzfyw.com