“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	periodicity modulus periodicity of a function periodicity of a sequence periodicity relation periodicity theorem periodic law periodic law of elements periodic law of geographic zonation periodic maintenance periodic mapping periodic Markov chain periodic matrix periodic module periodic morphism periodic motion periodic nonlinear error periodic nonsinusoidal current circuits periodic nonstationary process periodic operation test for steam turbine periodic optimization periodic orbit periodic oscillation periodic paralysis periodic pattern periodic permanent magnetic focusing

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