臭氧含量 meaning in English
ozone content
Examples
- Air quality . determination of ozone in ambient air . ultraviolet photometric method
空气质量.环境空气中臭氧含量的测定.紫外线光度计法 - Air quality - determination of ozone in ambient air - ultraviolet photometric method iso 13964 : 1998
空气质量.环境空气中臭氧含量测定.紫外分光光度法 - Nearly half of the u . s . population lives in counties that still have unhealthy levels of ozone or particle pollution , even though there appeared to be less ozone in many counties than previous years , the study found
研究发现，接近一半的美国人口所居住的县尽管许多县的臭氧含量似乎是比以前更少了，但至今那里的臭氧污染或微粒污染程度仍然会对健康不利。