“railway tunnel maintenance”的概念、定义、翻译、参考文献-科学参考

单词	railway tunnel maintenance
释义	railway tunnel maintenance Encyclopedia 工学﹝铁路工务养护维修﹞释 railway tunnel maintenance铁路隧道养护维修对铁路隧道主要结构和附属设施（拱墙结构、隧底结构、防排水设施、附属洞室、洞室门、洞门结构等）进行的检查、养护、维修和大修。
随便看	focal extender focal hyperbola focal image focalization focalizer focal length focal length factor of photographic lens focal length measurement of optical part and optical system focal line focal manifold focal mechanism focal mechanism solution focal mechanism solution parameters focal net focal pair focal parameter focal plane focal plane array focal-plane array focal plane array infrared seeker focal plane array tester focal plane assembly focal-plane instrumentation focal-plane modulator focal-plane spectrometer

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