“back holes”的概念、定义、翻译、参考文献-科学参考

单词	back holes
释义	back holes [`bak ´hōlz] ^{MINING ENGINEERING} The holes which are shot last in mine shaft sinking.
随便看	odd-pinnate odds ratio odd term Odessey protractor Odiniidae odinite Odobenidae odograph odometer O'Donahue's theory Odonata odontalgia odontectomy odontexesis odontoblast odontoblastoma Odontoceti odontoclast odont-, odonto- odontogenesis odontogenic odontogenic cyst odontogenic fibroma Odontognathae odontoid

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