英语词汇“black shale”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	black shale
释义	black shale 基本例句黑色页岩 The conodonts studied in this paper were collected from the black shales ofthe Llanvirnian Upper Ningguo Formation.本文研究了江西武宁奥陶系宁国组上部黑色页岩中的牙形刺。
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