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单词 polycrase
释义 poly·crase
\ˈ ̷ ̷ ̷ ̷ˌkrās, -āz\ noun
(-s)
Etymology: German polykras, from poly- + -kras (from Greek krasis mixing, combination) — more at krasis
: a mineral (Y,Ca,Ce,U,Th)(Ti,Cb,Ta)2O6 consisting of a columbate and titanate of the metals of the yttrium group that is isomorphous with euxenite (hardness 5-6, specific gravity 5)
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