fels rock
岩石
fels formation
岩层
fels mineral
矿物
fels deposit
矿床
fels texture
质地
fels analysis
分析
fels sample
样本
fels composition
成分
fels study
研究
fels layer
层
fels rock
岩石
fels formation
岩层
fels mineral
矿物
fels deposit
矿床
fels texture
质地
fels analysis
分析
fels sample
样本
fels composition
成分
fels study
研究
fels layer
层
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