cu.pel.la.tion

n.（名詞）
A refining process for nonoxidizing metals, such as silver and gold, in which a metallic mixture is oxidized at high temperatures and base metals are separated by absorption into the walls of a cupel.
烤缽冶金法：一種使銀和金等金屬不氧化的提純過程，在高溫下金屬混合物被氧化，低劣金屬被分離出來并吸入烤缽的墻上