URL：https://www.researchgate.net/profile/Xiao-Yang-Li-2/publication/270626862/figure/fig1/AS:1088915024949294@1636628981843/Schematic-illustration-of-real-crack-and-virtual-crack-model_Q320.jpg
掲載元：https://www.researchgate.net/figure/Schematic-illustration-of-real-crack-and-virtual-crack-model_fig1_270626862
