冶金 yějīn metallurgy Origin Definitions Defs Strokes Stroke Words Sentences Sents 冶金学 yějīnxué metallurgy The study of the science and technology of metals, including extraction from ores, refining, and the properties of alloys.电热冶金 diànrèyějīn electrothermics the process of using heat generated from electrical energy to smelt metals or alloys