background air pollution

基本解释

Background—Particulate air pollution has been consistently linked to increased risk of arterial cardiovascular disease.
背景-空气颗粒物污染向来与动脉心血管疾病的风险升高相关。
The effective measures that determined background value of urban air pollution and improved forecast accuracy was proposed.
首次提出了空气质量环境背景值的确定等提高城市空气污染预报准确率的有效措施。