Pofuna kukonza zinthu zina zachitsulo ndipo potero kupeza katundu wina wapadera mu ndondomeko smelting mwadala anawonjezera zinthu wotchedwa alloying zinthu.Zomwe zimagwiritsidwa ntchito ndi chromium, nickel, molybdenum, tungsten, vanadium, titaniyamu, niobium, zirconium, cobalt, silicon, ...
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