1. The bainite transformation during the incubative period was inevitable to form carbon leant zones and carbon enriched zones through the fluctuation.
贝氏体转变在孕育期内,通过涨落必然形成贫碳区和富碳区;
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2. Methods: Observing the incubative period and the times of cough induced by ammonia liquor or citric acid phlegm displacement of rat, the tracheal ciliary movement of duck.
3. Methods: Observing the incubative period and the times of cough induced by ammonia liquor or citric acid phlegm displacement of rat, the tracheal ciliary movement of duck.