摘要
本文简要分析了硬币的发展历史及硬币材料选择与制造工艺 ,说明了现代社会辅币硬币化趋势与硬币流通推广的重要意义。
This paper briefly analyses the development history of specie,specie materials and its manufacturing technology,then explains the significance of subsidiary coin and its circulation in modern society
出处
《江苏机械制造与自动化》
2000年第5期30-31,共2页
Jiangsu Machine Building & Automation
