| 释义 |
zinc oxide
noun
: an infusible water-insoluble white solid ZnO that turns yellow when heated, that occurs in nature as zincite, that is obtained as a light white powder when zinc is burned, that is produced commercially usually either by the direct American process of oxidizing zinc vapors during distillation before they have condensed or by the indirect French process of oxidizing the vapors of boiling zinc metal after condensation, and that is used chiefly as a pigment, in compounding rubber, and in pharmaceutical and cosmetic preparations (as ointments and powders) — see flowers of zinc, zinc white |