bau是什么贵金属
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IntroductionBauisagolddepositlocatedintheislandofBorneo,Indonesia.Itisknownforbeingoneofthelargestgolddepositsinthecountryandisconsideredtobeanimportantsi…
IntroductionBauisagolddepositlocatedintheislandofBorneo,Indonesia.Itisknownforbeingoneofthelargestgolddepositsinthecountryandisconsideredtobeanimportantsi…