“nog”的概念、定义、翻译、参考文献-科学参考

单词	nog
释义	nog [näg] ^{MINING ENGINEERING} 1. Roof support for stopes, formed of rectangular piles of logs squared at the ends and filled with waste rock. 2. A wood block wedged tightly into the cut in a coal seam after the coal cutter has passed; it forms a temporary support.
随便看	cermet resistor cernuous cerography cerolite Cerophytidae cerotic acid Cerruti's problem cers certainty equivalence control certation certified color certified reference material ceruloplasmin cerumen ceruminous gland cerussite cervantite cervical cervical canal cervical flexure cervical ganglion cervical plexus cervical sinus cervical vertebra cervicitis

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