单词black copper
na.: 【冶】粗铜
网络: 黑铜矿；黑色铜；黑面红铜
【冶金】粗铜
黑铜矿
The test result shows that the black copper is a gold containing(2%) copper alloy, and its surface composition mainly is copper oxide.
经过分析表明：乌铜是一种铜金合金，金含量为2%，表面成分主要是氧化铜。
Composition and Surface Analysis of Ancient Black Copper in Yunnan
云南古代乌铜成分和表面分析
Study on Composition and Properties of Black Copper in Ancient Yunnan
云南古代乌铜成份和性能的研究
The Mottled Copper and Black Copper Run Through with Silver in Yunnan
云南的斑铜与乌铜走银
Approach on Colority and Coloring Mechanism of Ancient Yunnan Black Copper
乌铜保护膜色度和成色机理探讨