“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。
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