| 释义 |
Definition of coltan in English: coltannounˈkɒltanˈkältan mass nounA dull metallic mineral which is a combination of columbite and tantalite and which is refined to produce tantalum. Example sentencesExamples - Thousands of Grauer's mountain gorillas, chimpanzees and elephants have been slaughtered for food by illegal miners searching for coltan, a mineral containing metals like tantalum and niobium, used in cellphones and computers.
- But cell phones also include coltan, a mineral extracted in the deep forests of Congo in central Africa, home to the world's endangered lowland gorillas.
- As well as gold and diamonds, the region is a source of the rare mineral coltan used in mobile phones.
- With the cell phone industry booming, the park's resources and wildlife are under massive strain from miners seeking colombo-tantalite, also known as coltan or tantalum.
- Congo is one of the world's greatest sources of the mineral coltan.
Origin 1990s: from columbite + tantalite. Definition of coltan in US English: coltannounˈkältan A dull metallic mineral composed of columbite and tantalite, and refined to produce tantalum. Example sentencesExamples - Congo is one of the world's greatest sources of the mineral coltan.
- But cell phones also include coltan, a mineral extracted in the deep forests of Congo in central Africa, home to the world's endangered lowland gorillas.
- Thousands of Grauer's mountain gorillas, chimpanzees and elephants have been slaughtered for food by illegal miners searching for coltan, a mineral containing metals like tantalum and niobium, used in cellphones and computers.
- With the cell phone industry booming, the park's resources and wildlife are under massive strain from miners seeking colombo-tantalite, also known as coltan or tantalum.
- As well as gold and diamonds, the region is a source of the rare mineral coltan used in mobile phones.
Origin 1990s: from columbite + tantalite. |