ordovician limestone aquifer
ordovician limestone aquifer
奥陶系灰岩含水层
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The Xingtai mining area is a typical North China Permo-Carboniferous karstic type coalfield, its lower coal group is generally under threat from the thick Ordovician limestone strong karstic aquifer.
邢台矿区属典型的华北岩溶型石炭—二叠系煤田，下组煤普遍受巨厚奥陶系灰岩强岩溶含水层的威胁。
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