Either stall or surge may result in combustor blowout.不管是喘振或者爆音,都将引起燃烧室的熄火.Therefore by regulating swirl number of combustor NO emission caw be reduced.因此,适当调整燃烧室的旋流数可以降低NO排放.Measurements were also time - averaged gas te...
近几年来英国的面貌发生了很多变化。Superficially there have been many changes in Britain in recent years.她几乎是一手改变了英国政治的面貌。She changed the face of British politics almost single-handed.60年代以来，植树造林已经改变了威尔士的乡村面貌。Since the Sixties, afforestat...