Colcothar

[kɔlkәθә]

解释:

(n.) Polishing rouge; a reddish brown oxide of iron, used in polishing glass, and also as a pigment; -- called also crocus Martis.

埃菲编辑

解释:

n. a dark-red iron peroxide formed by calcining copperas.

柯蒂斯校对