“raise boring machine”的概念、定义、翻译、参考文献-科学参考

单词	raise boring machine
释义	raise boring machine [rāz ¦bȯr·iŋ mǝ´shēn] ^{MINING ENGINEERING} A machine that is used to drill pilot holes between levels in a mine, and to ream the pilot hole to the finished dimension of the raise.
随便看	marginal dimensionality marginal escarpment marginal fissure marginally outer trapped surface marginal moraine marginal placentation marginal plain marginal plateau marginal probability marginal product marginal relay marginal revenue marginal salt pan marginal sea marginal sinus marginal test marginal thrust marginal ulcer marginal upthrust marginate margin line margin-notched card margin of safety margin plate margin-punched card

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