Experimental Study of 3D Micro-CT on Meso-Structure Evolution of Coal Samples with Different Coal Grades under the Action of Temperature

<div>The statistical figure for the section 2 of the lignite sample. (a) Cumulative proportion of pixels with 0～255 color levels at different temperatures. (b) Pixel ratio graph under specific color gradation with temperature change.</div>

Mathematical Problems in Engineering

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Figure 4

Figure 4: Experimental Study of 3D Micro-CT on Meso-Structure Evolution of Coal Samples with Different Coal Grades under the Action of Temperature 