"precovers" meaning in All languages combined

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  "lang_code": "en",
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          "ref": "2015, Lars Winther Christensen, Sergio Estrada, Alina Iacob, “A Zariski-local notion of F-total acyclicity for complexes of sheaves”, in arXiv:",
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        "plural of precover"
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      "id": "en-precovers-en-noun-mqaCQm6W",
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  "word": "precovers"
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