The thermodynamic processes of key elements used in cyclic flow engines are systematically analyzed and then Meso-scope thermodynamic theory for cyclic flow engines is proposed. 摘要提出了交變流動(dòng)熱機的介觀(guān)熱力循環(huán)理論,系統地分析交變流動(dòng)熱機中關(guān)鍵部件的熱力過(guò)程。