coltan

ریشه

20th century: blend of columbite and tantalite.

مثال

• The country's coltan mines are controlled by armed groups.
• Coltan is used in the manufacture of electronic devices.
• The illegal trade of coltan has been linked to conflict in the region.

ترکیب‌های رایج

Coltan mining Coltan trade Coltan ore Coltan extraction Coltan reserves