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热声不稳定
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热声不稳定
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thermoacoustic instability
热声不稳定
燃烧过程中火焰的释热脉动与燃烧室声学(压力)脉动之间形成的一种不稳定燃烧现象。具有周期性明显、破坏性强及非线性显著等特点。
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UNESCO General History of Africa
UNESCO Information for All Programme
UNESCO initiative on heritage of religious interest
UNESCO Longmen Grottoes protection and restoration project
UNESCO-UNEVOC International Centre for Technical and Vocational Education and Training
UNESCO World Heritage and Sustainable Tourism Programme
unessential
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unextendible product bases
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