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scoria    
n. 铁渣子,矿渣,烧石

铁渣子,矿渣,烧石

scoria
n 1: the scum formed by oxidation at the surface of molten
metals [synonym: {slag}, {scoria}, {dross}]

Scoria \Sco"ri*a\, n.; pl. {Scoriae}. [L., fr. Gr. ?, fr. ?
dung, ordure.]
1. The recrement of metals in fusion, or the slag rejected
after the reduction of metallic ores; dross.
[1913 Webster]

2. Cellular slaggy lava; volcanic cinders.
[1913 Webster]


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