The result shows that the dynamic fracture toughness is affected by both the loading rate and the specimen size.

测试结果表明，岩石的动态断裂韧度同时受到加载率效应和尺寸效应的影响。

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The result shows that the dynamic fracture toughness is affected by both the loading rate and the specimen size.

测试结果表明，岩石的动态断裂韧度同时受到加载率效应和尺寸效应的影响。

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