Fig. 4
From: Accurate acoustic classification research of visually similar monochrome porcelain fragments
Microstructure of monochrome porcelain samples L1, J1, H1 and Y1. a Cross-sectional photos and structural diagrams of four samples; b–e Microscopic photos of the glaze of four samples; (f–i) SEM photos of four samples of green glaze. Scale bars, 4 mm (a), 500 μm (b–e), 100 μm (f), 200 μm (g-glaze), 20 μm (g-body), 5 μm (h-glaze), 50 μm (h-body) 4 μm (i-glaze) and 200 μm (i-body)
