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Possibly they first found native copper and hammered it into shape.
可能他们最初找到的是生铜,把它锤击成形.
辞典例句
Keweenaw native copper deposit was formed in an intracontinental rift.
基维诺自然铜矿床生成于陆内裂谷环境.
互联网
Sulfide and oxide are the familiar minerals of copper, and native copper is peculiar in nature.
铜在自然界中多以氧化物和硫化物形式存在,只有少部分以单质或者合金状态产出.
自然铜???
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