black copper 粗铜 ; 黑色铜 ; 黑铜矿 ; [冶] 黑铜
copper oxide black 氧化铜 ; 氧化铜氧化铜
Direct Copper Black RL 直接铜盐黑RL
copper chromite black spinel 铜铬黑
black copper ore 黑铜矿
Depending on individual habitats, which extend from the tropical forests of Costa Rica to Brazil, their coloring can be yellow, gold, copper, red, green, blue, or black.
它们遍布于哥斯达黎加、巴西等热带雨林中,其肤色通常为黄色、金色、铜色、红色、绿色、蓝色或黑色。
In several reactions a colour change indicates the formation of new products. For example, green copper carbonate reacts, when heated, to form black copper oxide and carbon dioxide gas.
在一些反应中颜色会发生变化,它表明产生了新的物质,例如,绿色的碳酸铜在加热时会分解为黑色的氧化铜和二氧化碳气体。
This grave is surrounded with basalt stones and with blackgreen copper plates. It refers to the black volume.
墓地的周围围绕摆放着玄武岩和黑绿色的铜板。它同黑色的体块相关联。
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