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

单词	railway subgrade maintenance
释义	railway subgrade maintenance Encyclopedia 工学铁路路基工程释 railway subgrade maintenance铁路路基养护铁路工务部门对铁路线路的路基所进行的养护和维修。为保持铁路路基本体及附属设施处于良好状态，延长设备使用寿命，及时整治路基病害，预防病害的发生和发展，需经常性有计划地改善路基设备状态。
随便看	primitive recursion primitive recursive arithmetic primitive recursive attribute primitive recursive description primitive recursive function primitive recursive isomorphism primitive recursiveness primitive recursive operation primitive recursive predicate primitive recursive relation primitive recursive scheme primitive recursive set primitive recursive transformation primitive reflex primitive regular group primitive relation primitive religion primitive representation primitive representation space primitive right triangle primitive ring primitive root primitive root of unity primitive sculptures of China primitive semigroup

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