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williamguo:明明就是沉积岩,那里是火山岩 (2012-12-29 12:46) ~P-mC@C
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bluesilva_yt:这也太猛了,我以为是熔岩烘烤,原来是煤层自燃烘烤。话说如果煤地层上有覆盖层,它如何自燃啊? (2013-01-27 16:00) 2SR: FUV/
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