Twinning and de-twinning are the salient deformation mechanisms in hexagonal close-packed(hcp)metals. The aim of this study was to examine and quantify the de-t
Made in 1061 A.D.(North Song Dynasty)Height:17.9m,weight:53.3tThe Dangyang Tower,located outside of the Yuanquan temple in Dangyang county of Hubei province,is