“underground service drilling hole”的概念、定义、翻译、参考文献-科学参考

单词	underground service drilling hole
释义	underground service drilling hole Encyclopedia 工学矿山井巷释 underground service drilling hole井下服务钻孔用于地下采矿的充填、排水、泄水、供水、供风或布置电缆等所需的钻孔。
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