权威例句
The wrap lead cupelling method for the determination of gold and silver contents of bessemer copperCUPELLING OF ANCIENT GOLD IN KAZAKHSTAN AND SAYAN-ALTAI AS TIME AND SOCIAL INDICATORINVESTIGATION OF CUPELLING METHOD USED FOR RUTHENIUM AND IRIDIUM ISOLATIONA new lecture experiment—The cupelling of gold and silverRecovery of precious metals from evaporite sedimentsPractice and Research on the determination of the content of gold and silver in copper anode mud fire assayRecovery of precious metals from evaporite sediments金銀の灰皿吸收理論に關する一考察Filling the GapLead concentrations associated with fire assaying can be a health problem
