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单词 sphene
释义 sphene
 /sfeen/,  n.  
 a mineral, calcium titanium silicate, CaTiSiO5, occurring as an accessory mineral in a variety of crystalline rocks, usually in small wedge-shaped crystals. Also called titanite.
 [1805-15; < Gk sphén wedge]
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更新时间:2024/12/23 18:10:25