“poling back”的概念、定义、翻译、参考文献-科学参考

单词	poling back
释义	poling back [`pōl·iŋ `bak] ^{MINING ENGINEERING} Carrying out excavation behind timbering already in place.
随便看	bus bus architecture busbar bus cable Busch lemniscate bus duct bus extender bushbaby bushel bush fallowing bush hammer bushing bus mouse bus network bus reactor buster bustite busulfan busway busy test busy tone butadiene dimer butadiene rubber butadiene-styrene rubber Butamer process

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