Fig. 3From: Influence of pretreated wood dowel with CuCl2 on temperature distribution of wood dowel rotation weldingTemperature regression analyses of different times for the untreated and pretreatment group. a–c Untreated group with welded times 3, 5, 7 s. d–f Pretreated group with welded time 3, 5, and 7 sBack to article page