1 ผลลัพธ์ สำหรับ -polianite-

หรือค้นหา: -polianite-, *polianite*

Collaborative International Dictionary (GCIDE)

n. [ Gr. &unr_; to become gray. ] (Min.) Manganese dioxide, occurring in tetragonal crystals nearly as hard as quartz. [ 1913 Webster ]

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