| 单词 | philosophic cotton |
| 释义 | > as lemmasphilosophic cotton † philosophic cotton n. Obsolete a name for zinc oxide, when obtained as a white flocculent powder by burning zinc.extracted from cottonn.1philosophic cotton ΚΠ 1753 Chambers's Cycl. Suppl. Philosophic Cotton, a name given by some chemical writers to the flowers of zink, from their whiteness, and silky or cottony appearance. < as lemmas |
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