This paper offers some propositions relating to the interogations and discussions dealing with the conceptions, classifications,nomenclature of underground mining methods of metalliferous deposit.是什么意思_This paper offers some propositions relating to the interogations and discussions dealing with the conceptions, classifications,nomenclature of underground mining methods of metalliferous deposit.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句