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

单词	absolute roof
释义	absolute roof 采矿绝对顶板；矿层以上的直接顶板
随便看	Bossel's interpolation formula Bosselut Bossembele Bossembélé Bossemptele Bossen boss end bracket Bossenmaier bossennec Bossennmayer Bossentele Bosseous metastasis Bosser bosseray Bossereau Bosserelle bosserhoff Bossers Bossert bosserts bosses bosses about bosses around Bosses give their employees protection Bosses have to roll up their sleeves and work