Research Article
Micropore Structure and Fractal Characteristics of Low-Permeability Coal Seams
Figure 2
Raw coal sample SEM images (×1000). (a) B-1 coal sample. (b) B-2 coal sample. (c) B-3 coal sample. (d) B-4 coal. (e) B-5 coal sample. (f) B-6 coal sample.
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