In November 1941 Payne was seriously ill with pneumonia.1941年11月，佩恩得了严重的肺炎。The new drug lessens the severity of pneumonia episodes.新药减轻了肺炎发作时的痛苦。She had feared she was going down with pneumonia or bronchitis.她担心会得肺炎或支气管炎...
This chapter describes methods of estimating airborne pollutant concentration distrubutions associated with various emission sources.本章论述几种有关各种排放源的大气污染物浓度分布的估算方法.Hyetographs are important in estimating stormflow hydrogra...