Estimates suggest that for every cubic meter of vent discharge, 350 milligrams of particulate organic material would be advected into the vent area.
据估计，每立方米排气口所排出的物质中，就有350毫克的有机颗粒物质被平流输送到排气口区域。
The feasibility of preparation of particulate activated carbon from char of cocoa nut husk by water vapour microwave was studied.
研究了以椰壳炭化料为原料，采用水蒸气微波法制备颗粒活性炭的可行性。
The 2005 AQG set for the first time a guideline value for particulate matter (PM).
2005年空气质量准则第一次为可吸入颗粒物（PM）确定了一项指导值。
Fine particulate matter is linked to respiratory ailments, heart disease, stroke and premature death.
微细颗粒物跟呼吸系统疾病、心脏病、中风和早逝有关。
In a gas mask designed to guard against a biological threat, a very fine particulate filter is useful.
预防生物威胁时，优良的微粒过滤器对防毒面具非常有用。
The Clean Air Act mandates the EPA to regulate harmful pollutants such as particulate matter and ozone.
《清洁空气法》授权美国环保局监管有害污染物，如微粒物质和臭氧。
A chemical threat needs a different approach, because chemicals come as mists or vapors that are largely immune to particulate filtration.
化学威胁需要不同的防护手段，因为化学品以雾或蒸气的形式存在，微粒过滤器对它们无效。
WMO scientists assess and monitor air pollutants such as ground-level ozone, smog, particulate matter, sulfur dioxide and carbon monoxide.
世界气象组织的科学家对地面臭氧、烟雾、空气悬浮微粒子、二氧化硫、一氧化碳之类的污染物质进行评估监测。
By reducing particulate matter (PM10) pollution from 70 to 20 micrograms per cubic metre, we can cut air quality related deaths by around 15%.
将可吸入颗粒物(PM 10)从每立方米70微克减少到20微克，则与空气质量有关的死亡就可减少大约15%。
If you have ever held a cloth or handkerchief over your mouth to keep dust out of your lungs, you have created an improvised particulate filter.
如果你曾经用布或手绢捂住嘴来阻挡灰尘吸入，那么你就自创了简易微粒过滤器。
Air quality is represented by annual mean concentration of fine particulate matter (PM10 and PM2.5, i.e. particles smaller than 10 or 2.5 microns).
空气质量用年平均细颗粒物的浓度表示(PM10至PM 2.5，即粒径小于等于10或2.5微米的细颗粒)。
Even accounting for the new analysis, natural gas-which also emits less toxic and particulate pollution-offers a significant environmental advantage.
即便如此，天然气仍然以有毒物质少、颗粒污染物少的特征而具备显著的环境优势。
Fine particulate matter - particles smaller than 2.5 micrometers - can evade hairlike projections in the nose and trachea that trap larger particles.
细颗粒物——小于2.5微米的颗粒——能躲过鼻子和气管中绒毛的保护作用。
The smoky stoves that many of them use, the World Health Organisation reckons, produce particulate pollution that causes around 2m premature deaths a year.
世界卫生组织估计，他们当中许多人使用的炉子会产生很多烟，其中的微粒污染物每年都会导致近200万人提前死亡。
More severe burning also raises a number of health concerns, as fire emissions contain mercury and particulate matter that can cause respiratory issues, said Turetsky.
越来越严重的山火也带来了许多健康威胁，因为山火燃烧后的排放物中含有汞金属以及可以引起呼吸系统疾病的微小颗粒状物质，特莱特·斯基说。
Scientists have known for a long time that aerosols such as soot, dust and other small particulate matter, alter cloud density and the radiative balance of the atmosphere.
科学家们很早之前就发现，诸如煤烟、灰尘和其他细小的微粒，能改变云体的密度及大气的辐射平衡。
The Guidelines indicate that by reducing particulate matter (PM10) pollution from 70 to 20 micrograms per cubic metre, we can cut air quality related deaths by around 15%.
该准则指明，将颗粒物(PM 10)从每立方米70微克减少到20微克，则与空气质量有关的死亡就可减少大约15%。
Research in Mexico City suggested that secondary aerosols made up two-thirds of particulate pollution, but earlier studies in Los Angeles showed the reverse, Jimenez says.
Jimenez说在墨西哥城进行的研究显示次生气溶胶占颗粒物污染的三分之二，但早些时候在洛杉矶的研究结果与之相反。
Details to be revealed, but there is likely to be an expansion of the pollutant targets to include nitrogen oxide, ammonia and, possibly, PM2.5 small particulate matter.
细节还有待发布，但是扩大后的污染物治理目标可能会将二氧化氮、氨和PM 2.5包括进去。
More generally, small particulate matter and other pollutants in indoor smoke inflame the airways and lungs, impairing immune response and reducing the oxygen-carrying capacity of the blood.
较为一般的情况是，室内烟雾中的微小颗粒物及其它污染物可使气道和双肺出现炎症，对免疫反应带来损害并且会降低血液携带氧气的能力。
Measuring the health effects of particulate pollution is a tricky business — generally speaking, the smaller the particle, the more easily it can get inside your lungs and into your bloodstream.
评估可吸入颗粒对健康的影响是一件棘手的工作——通常说来，颗粒越小，那么就越容易被吸入肺中然后进入血液。
In 2004, levels of airborne particulate in Beijing were more than six times as high as in New York, and sulfur-dioxide levels were more than double, according to Chinese and U.S. government figures.
根据中国和美国官方公布的数字，2004年，北京大气中的可吸入颗粒物浓度是纽约的6倍多，二氧化硫浓度是纽约的两倍多。
"The fine particulate matter is what affects visibility and makes it look like a horrible foggy day," said Cornell air quality expert Westerdahl. "it also is what most directly affects human health."
“这些微细颗粒物是影响可见度，让天空看起来雾茫茫的原因，”康奈尔空气质量专家威斯·特达说，“它也是最直接影响健康的因素。”
"The fine particulate matter is what affects visibility and makes it look like a horrible foggy day," said Cornell air quality expert Westerdahl. "it also is what most directly affects human health."
“这些微细颗粒物是影响可见度，让天空看起来雾茫茫的原因，”康奈尔空气质量专家威斯·特达说，“它也是最直接影响健康的因素。”
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