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煤层石球 煤结核
coalball
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煤结核,煤层石球
coal-ball
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煤球煤结核
coalball
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煤层石球
coal ball coalball
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煤结核
coal ball niggerhead seam nodule
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含铀煤结核
culm kolm
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煤层顶板结核体
cauldron bottom
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煤层中黄铁矿结核
coal brass
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眼球煤
augenkohle
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煤层
[地质学] coal rake; coal seam; coal bed 短语和例子 薄煤层 thin seam; 厚煤层 thick seam ...
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颗石球
coccosphere
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硝石球
niter ball
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燧石球
flint ball
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烟煤结块
bituminous coal caking
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白云石球团
dolomitic pellets
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石球藻属
lithococcus
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铁矿石球团
iron ore agglomerate iron-ore pellets ironorepellet
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陨石球粒
chondrule chondrus
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