英语词汇“strong stratum, hard stratum”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	strong stratum, hard stratum
释义	strong stratum, hard stratum 坚硬岩层；强度高、节理裂隙不发育、整体性强、自稳能力强的岩层。
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