这段英语怎么翻译PM，英文全称为particulatematter(颗粒物）。科学家用PM2.5表示每立方米空气中这种颗粒的含量，这个值越高，就代表空气污染越严重。PM2.5是指大气中直径小于或等于2.5微米的
这段英语怎么翻译
PM，英文全称为particulatematter(颗粒物）。科学家用PM2.5表示每立方米空气中这种颗粒的含量，这个值越高，就代表空气污染越严重。
PM2.5是指大气中直径小于或等于2.5微米的颗粒物，也称为可入肺颗粒物。它的直径还不到人的头发丝粗细的1/20。虽然PM2.5只是地球大气成分中含量很少的组分，但它对空气质量和能见度等有重要的影响。与较粗的大气颗粒物相比，PM2.5粒径小，富含大量的有毒、有害物质且在大气中的停留时间长、输送距离远，因而对人体健康和大气环境质量的影响更大。2012年2月，国务院同意发布新修订的《环境空气质量标准》增加了PM2.5监测指标。
PM,Englishcalledparticulatematter(particles).ScientistssaythecontentofsuchparticlespercubicmeterofairwithPM2.5,thehigherthevalue,onbehalfofairpollutionismoreserious.
PM2.5referstotheatmospherediameterlessthanorequaltotheparticles2.5microns,alsocalledpm2.5.Itsdiameterislessthanthethicknessofhumanhairby1/20.AlthoughthePM2.5onlygroupcontentofafewearthatmosphericcomponents,butithasanimportantinfluenceonairqualityandvisibility.Comparedwiththeatmosphericparticlesofcoarseparticlesize,PM2.5,containsalargeamountoftoxic,harmfulsubstancesandresidencetimeintheatmosphereoflong,longconveyingdistance,sotheimpactonhumanhealthandthequalityofatmosphericenvironmentofthegreater.In2012February,theStateCouncilagreedtothereleaseofthenewlyrevised"ambientairqualitystandard"increasedPM2.5monitoringindex.
PM,calledtheEnglishparticulatematter(particulatematter).ScientistssaidPM2.5percubicmeterofthecontentoftheparticlesintheair,thehigherthevalue,isthemoreseriousairpollution.
PM2.5referstotheatmospherediameterlessthanorequalto2.5micronparticles,alsoknownascangodirectlytothealveoli.Itsdiameterislessthan1/20ofthethicknessofahumanhair.AlthoughPM2.5isonlyafewcomponentscontentofearth'satmosphericcomposition,butithasimportanteffectonvisibilityandairqualityetc.Comparedwithcoarserofatmosphericparticulates,PM2.5particlesizeissmall,richinalotofpoisonousandharmfulsubstancesandintheatmosphereforalongtime,transmissiondistance,andtohumanhealthandtheimpactofatmosphericenvironmentquality.ReleasedinFebruary2012,thestatecouncilhasapprovedthenewrevisionoftheambientairqualitystandard"addedPM2.5monitoringindicators.
PM,Englishcalledparticulatematter(particulatematter).ScientistswiththecontentofPM2.5percubicmeterofair,saidsuchparticles,thehigherthevalue,onbehalfofthemoreseriousairpollution.
PM2.5refersatmospherediameterlessthanorequalto2.5micronparticles,alsoknownasparticulatematterintothelungs.Itsdiameterislessthanthethicknessofahumanhair1/20.AlthoughthecompositionoftheEarth'satmosphereinPM2.5levelsjustafewingredients,buttheairqualityandvisibilityithasimportantimplications.Comparedwithcoarseatmosphericparticles,PM2.5smallsize,richinalotoftoxicandhazardoussubstancesandlongresidencetimeintheatmosphere,conveyingdistance,andthusagreaterimpactonhumanhealthandenvironmentalqualityoftheatmosphere.February2012,theStateCouncilagreedtoreleasethenewlyrevised"ambientairqualitystandards,"addsPM2.5monitoringindicators.