搜索结果: 1-1 共查到“采矿工程 Techniques”相关记录1条 . 查询时间(0.122 秒)
Techniques Used for the Preparation and Application of Gold Powder in Ancient China
Preparation Application Gold
2009/7/29
The preparation and application of gold powder have a long history in China. The ancient Chinese had adeep understanding of the morphology and size of naturally occurring gold powder. In the early sta...