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

词汇	black shales
释义	black shales 基本例句黑色页岩 The conodonts studied in this paper were collected from theblack shalesofthe 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。
随便看	rail bond grinder rail bonding rail bonding drill rail bond resistance tester rail bond tester rail borer railborne rail borne rail-borne rail-bornes rail bottom railbound rail bound rail-bound hauling system railbound manganese-steel frog rail bound manganese steel frog rail-bound transportation system railbound vehicle rail brace rail brace bed rail brackets rail brake rail brake magnet rail brakes rail brand