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（一）Abackpack-carrieddigitalnosethatsniffsoutsimpleexplosivedevices（lEDs）andotherthreatspromisestoeasecheckpointdutyfortroopsstationedinhotspotsaroundtheworld.DevelopedbyScentDetectionTechnologies（SDT）,asmallprivatelyownedcompanybasedinHeraliya,Israel,themilitarizedmininose—trademarkedMN2000-MIL—detectsandidentifiesEDs,riggedvehicles （ 伪 装 的 车辆）andotherhazardsbythevaporsortracesparticles（微粒）leftonskin,machineryandpersonalbelongings.Soontoentermassproduction,theMN2000-MILisnruggedized（强化的 ） versionofthefirm'sMiniNosc2000designedforusebylawenforcementandsecuritypersonnel.Itisasecond-generationversionofIhcfirm'sMN1000,whichhasbeenpurchasedbyseveralAsiancountries,includingChina,whichintroducedthesystemfortheBeijingOlympics.Likeitsformerproducts,thesystemisbasedoncompany-patentedHigh-FrequencyQuartzCrystalMicrobalancc （ HFQCM ） technologythatdigitallyimitatesmammalianolfactory 嗅（觉的）sensecapableoflearningtorecognizenewsubstance.Itworkslikeasupersensitivedigitalnoseabletodetectverylownanolcvcl（纳米级）amountsofanysourcesubstance,”SDTChiefExecutiveOfficerBengalsaid.“Wethenteachittoidentifysubstancesbymatchingthemwithalibraryofthreatswe'veprogrammedintothemachine.”Theentireanalysisprocess,Bengalsaid,takes8to26seconds,dependingonsubstances.Unlikeothertracedetectionsystemsonthemarket,whicharebasedonradioactive-sourceIonMobilitySpectrometrytechnologySDT'sQCM-basedsystemcontainsnoradioactiveparts.“IonMobilitySpectrometrysystemsareessentiallyradioactive,”Bengalsaid.Youneedspeciallicensingtosellthemandspeciallytrainedpersonneltoservicethem.Butwe'reusingessentiallygreentechnology.Youdon'tneedtrainedtechnicianstooperateorevenopenourmachines.”InthetwoyearssinceSDTbeganproducingtheMN2000forthehomelandsecuritymarket,thesystemhasdemonstrateditsabilitytooperateformonthsatatimewithoutservicingortechnicalrepairs.Bengalsaidthenewmilitarymodelwillbemuchstronger,asitwasdesignedtooperateindust,heavyfogandotherwiseextremefieldconditions.Digit...