URL：https://www.researchgate.net/publication/348607657/figure/fig2/AS:981802407698433@1611091343940/Cross-sections-of-the-angle-and-T-bars-with-attached-plates.png
掲載元：https://www.researchgate.net/figure/Cross-sections-of-the-angle-and-T-bars-with-attached-plates_fig2_348607657
