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Kawm txog Bismuth
Bismuth yog silvery dawb rau liab hlau uas yog nkig thiab yooj yim rau crush. Nws cov khoom siv tshuaj yog qhov ruaj khov. Bismuth muaj nyob rau hauv xwm nyob rau hauv daim ntawv ntawm dawb hlau thiab minerals. 1. [Zoo] Ntshiab bismuth yog cov hlau mos, thaum tsis huv bismuth yog nkig. Nws ruaj khov ntawm chav tsev kub....Nyeem ntxiv
