PAT and other techniques have been used to study the composition micro structure and defects of the iron coins minted in the Southern Tang Dynasty and the Northern and Southern Song Dynasties.
结果表明，早在南唐时期，我国铁币冶铸技术已达到一定水平，且在宋代有所改进。
The quality of COINS was in disorder in the early years of the Song Dynasty.
宋初钱币质量混乱，私钱和劣币泛滥。
应用推荐