nke
The lugs na-mere si elu conductivity annealed ọla kọpa nke na-enye kasị mma eletriki Njirimara kwere omumeIhe onwunwe: ọla kọpa -99.9% dị ọchaNa-arụ ọrụ okpomọkụ: -55 ℃ ka 155 ℃ n'ihi oxygen-free ọla kọpa