“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	dI galaxy digamety digamma-function digamma theorem digastric digenetic propagation digenetic reproduction digenic inheritance digest digestable energy digestants digester digestibility digestible amino acid digestible crude protein digestible energy digesting scheelite concentrate by hydrochloric acid digesting scheelite concentrate by soda autoclaving process digesting scheelite concentrate by sulfuric-phosphoric mixed acid solution digesting tungsten ores by caustic soda autoclaving process digesting tungsten ores by soda sintering method digestion digestion and absorption of nutrients by ruminants digestion and absorption of nutrients in monogastric animals digestion experiment

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