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字词 岩心
释义 岩心yánxīn进行地质勘探时用管状的机件从地层中取得的柱状岩石标本。{core; cylindrical rock specimen obtained by drilling vertically into the earth and used to determine composition of a rock stratum or presence of mineral deposits}
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更新时间:2025/5/12 1:54:48