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单词 streak powder
释义

> as lemmas

streak powder
streak powder n. (see quot. 1857, cf. 2d).
ΚΠ
1857 J. D. Dana Man. Mineral. (1862) 56 The color of a surface that has been rubbed or scratched..is called the streak, and the powder abraded, the streak-powder.
extracted from streakn.1
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