“阶段崩落采矿法”的概念、定义、翻译、参考文献-科学参考

单词	阶段崩落采矿法
释义	阶段崩落采矿法 Encyclopedia 工学阶段崩落采矿法释 block caving mining method阶段崩落采矿法利用深孔或者中深孔凿岩爆破工艺将阶段内矿石一次崩落的采矿方法。矿块布置和回采工艺大体与有底柱分段崩落法相似，落矿需要借助凿岩爆破的外力。属于一步骤回采。
随便看	American Association on Mental Deficiency American Association on Mental Retardation American Astronomical Society American Ballet Theatre American Baptist Churches American Beauty American black bear American Black District in Liberia American Board of Commissioners for Foreign Missions Press American Book Awards American Book Producers Association American Book Publishers Council American Booksellers Association American Book Trade Directory American-Britain vegetation school American Broadcasting Companies American Broadcasting Company American bull grog American cinema American Civic Association American Civil Rights Movement American Civil War American College Testing American Colonization Society American Concrete Institute

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