Ka ọ dị ugbu a, e nwere ọtụtụ isi usoro nhazigharị maka tungsten carbide. Otu bụ ihe a na-akpọ usoro ọgwụgwọ okpomọkụ dị elu, nke gụnyere: usoro mgbaze saltpeter, ikuku oxidation sintering usoro, oxygen calcination usoro, wdg;nke ọzọ bụ usoro ngwepịa igwe, whi...
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