Cobalt yog ib qho ci ntsa iab hlau-grey hlau, kuj nyuaj thiab nkig, ferromagnetic, thiab zoo ib yam li hlau thiab npib tsib xee hauv hardness, tensile zog, txhua yam khoom, thermodynamic zog, thiab electrochemical cwj pwm.Cov hlau nplaum ploj thaum rhuab mus rau 1150 ℃.Cov...
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