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金绿宝石
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金绿宝石
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chrysoberyl
金绿宝石
氧化物矿物。化学组成为BeAl2O4,晶体属斜方晶系。因独特的黄绿至金绿色而得名,以其特殊光学效应(猫眼效应、变色效应)而闻名,被列为世界五大宝石之一。
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forestry statistics
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forestry sustainable development
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forestry technology and economic results
forestry thematic map
forestry thought history
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forests and environmental pollution
forest seedling statistics index
forest-shrubland-grassland faunal group of subtropical zone in China
forest-shrubland-grassland faunal group of tropical zone in China
forests in China
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Forests of Literary Works
forest soil organic matter decomposition
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Forest Song
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