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悦读「优质少量RSS聚合」

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发布11月20日2025/11/20 00:45
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Wikipedia每日一图（#November 20, 2025）https://ift.tt/FVxz1SY Geological fieldworks, underground in the Estonian oil shale mine to study the variable mineralogical and chemical composition and microstructure in the different layers of the oil shale profile. 了解更多 . #Wikipedia每日一图