Shock and Vibration / 2018 / Article / Fig 4

Research Article

Strength and Failure Characteristics of Natural and Water-Saturated Coal Specimens under Static and Dynamic Loads

Figure 4

SEM testing photos of coal and Shendong limestone specimens.
(a) Coal × 200
(b) Coal × 500
(c) Limestone × 50
(d) Limestone × 500

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