Contents1Researchandapplicationstatusofannularheating1．1Characteristicsanddevelopmentstatusofannularfurnace1．1．1Historyofbilletreheatingfurnace1．1．2Developmentstatusofannularheatingfurnace1．2Researchstatusofannularheatingfurnace1．2．1Theoreticalmodelmethod1
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