“back work”的概念、定义、翻译、参考文献-科学参考

单词	back work
释义	back work [`bak ´wǝrk] ^{MINING ENGINEERING} Any kind of operation in a mine not immediately concerned with production or transport; literally, work behind the face, such as repairs to roads.
随便看	minimum enroute instrument altitude minimum firing current minimum flight altitude minimum flood minimum frontal diameter minimum ionizing speed minimum-latency coding minimum-latency programming minimum-latency routine minimum lethal dose minimum-loss attenuator minimum-loss matching minimum-loss pad minimum metal condition minimum-modulus theorem minimum-phase system minimum range minimum reflux ratio minimum rent minimum resolvable temperature difference minimum safe distance minimum-shock boom minimum signal level minimum thermometer minimum turning circle

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