The World Health Organization recognizes six main types of air pollutants: carbon monoxide, nitrogen dioxide, particulate matter, sulphur dioxide, tropospheric ozone and suspended particulate matter.
但目前尚不清楚什么级别的空气污染物(如果有的话)对人类健康才是安全的。
They said it is not clear what level of air pollutants, if any, is safe for humans.
因此,钢铁生产产生了大量的空气污染物、固体副产品和残渣,以及废水污泥。
As a result, steel production generates significant amount of air pollutants, solid by-products and residues, as well as waste water sludge.
通过建立车辆节能标准和车辆排放标准,减少了车辆排放的空气污染物。
The establishment of standards for vehicle fuel efficiency and for vehicle emissions have been used to reduce the emission of air pollutants from vehicles.
任何滤网的净化能力都是有限的,只能净化一定量的空气污染物,甲醛污染也不例外。
Any filter purification capacity is limited, can only purify a certain amount of air pollutants, formaldehyde pollution is no exception.
在硅谷的某些地方,空气污染严重,因此出现在该州的有毒空气污染物清单中。
In some parts of Silicon Valley, the air is so polluted that it appears on the state's Toxic Air Contaminant Inventory.
该部门一直密切监测火灾的强度,并预测火灾排放的空气污染物的传播。
The service has been closely monitoring the intensity of the fire and predicting the transmission of air pollutants from the fire.
它还强调了减少产生硫酸盐气溶胶的空气污染物类型的重要性。
It also reinforces the importance of mitigating the type of air pollutants that produce sulfate aerosols.
在生态学和可持续性方面,它指排放出的空气污染物和温室气体。
In ecology and sustainability, it is the discharge of air pollutants and greenhouse gases.
该公司的空气过滤技术能去除室内95%的空气污染物和有害气体。
Airlabs installs air filtering technology that removes 95% of air pollutants and harmful gases.
例如,森林火灾是影响许多社区的空气污染物的主要来源。
For example, forest fires are a large source of air pollutants that affect many communities.
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