kolumbiy – kimyoviy xossalarida tantalga o'xshash po'lat kulrang metall element; 9kdan past bo'lgan superkompyuterga aylanadi; asosan qotishma shaklida ishlatiladi. Ramz: nb; atom raqami: 41; atom og'irligi: 92.906; o'ziga xos tortishish: 20 ° c da 8.4.
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columbium – a steel-gray metallic element resembling tantalum in its chemical properties; becomes a superconductor below 9 k; used chiefly in alloy steels. Symbol: nb; atomic number:41; atomic weight: 92.906; specific gravity: 8.4 at 20°c.
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