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单词 polianite
释义 polianite
 /poh"lee euh nuyt'/, n. Mineral.
 a variety of pyrolusite, MnO2, having well-developed crystals.
 [1840-50; < G Polianit, irreg. < Gk poliaínesthai to grow white (with sea foam), deriv. of poliós gray; see -ITE1]
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