| 释义 |
cu·pel·la·tion
\ˌkyüpəˈlāshən\ noun
(-s)
Etymology: cupel (II) + -ation
: refinement (as of gold or silver) in a cupel by melting the metallic charge and then exposing it to a blast of air, the lead, copper, tin, and other unwanted metals being oxidized and partly sinking into the porous cupel and partly being swept away by the blast |