nitrogen dioxide concentration

基本解釋

High concentration of sulphur dioxide, nitrogen, oxides and dust have long been known to be harmful.
人們早已知道，二氧化硫、氮、氧化物和塵埃濃度高是有害的。
The square of coloring development length of the tube was directly proportional to the product of the nitrogen dioxide concentration and sampling time.
根據(jù)時間和顯色長度可求出環(huán)境中二氧化氮的濃度。
They recommend revised limits for the concentration of selected air pollutants: particulate matter (PM), ozone (O3), nitrogen dioxide (NO2) and sulfur dioxide (SO2), applicable across all WHO regions.
它們爲下述選定的空氣汙染物的濃度限值提出了脩訂：可吸入顆粒物（PM）、臭氧（O3）、二氧化氮（NO2）和二氧化硫（SO2），適用於世衛(wèi)組織所有區(qū)域。