“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.
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