Fig. 5From: Effects of preheating temperature, preheating time and their interaction on the sandwich structure formation and density profile of sandwich compressed woodRelationship between preheating temperature and position of compressed layer(s). Phase 1 means range for slow moving rate; Phase 2 means range for fast moving rate; Phase 3 means platform area after the convergence of compressed layers. Each point represents the average of measurements on six specimens, and the error bar is the standard deviation valueBack to article page