“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	underluminous star underlying underlying algebraic structure underlying design underlying diagram scheme underlying dysfuctional assumption underlying functor underlying galaxy underlying graph underlying group underlying manifold underlying module underlying net underlying object underlying polyhedron underlying set underlying-set functor underlying simple graph underlying space underlying topological space underlying topology underlying variety undermassive star undermoderated under-moon

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