“railway track maintenance and renewal”的概念、定义、翻译、参考文献-科学参考

单词	railway track maintenance and renewal
释义	railway track maintenance and renewal Encyclopedia 工学﹝铁路工务养护维修﹞释 railway track maintenance and renewal铁路线路养护维修对钢轨、轨枕、道床、道岔、钢轨伸缩调节器、联结零件及轨道加强设备等线路设备进行的维修和大修。
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