“ballast track”的概念、定义、翻译、参考文献-科学参考

单词	ballast track
释义	ballast track Encyclopedia 工学［轨道型式］释 ballast track有砟轨道由钢轨、扣件、轨枕和散粒体碎石（或卵石、砂）道床、道岔及轨道加强设备组成的铁路轨道。是铁路上应用最早、使用范围最广的轨道结构形式，有较丰富的使用经验，成套的线路大修、维修机械和施工工艺。
随便看	coordinate measuring machining coordinate measuring -metrology coordinate measuring technology coordinate method coordinate neighborhood coordinate network coordinate of a point coordinate of a point on earth surface coordinate of a vector coordinate of reference station coordinate of the pole coordinate operator coordinate origin coordinate paper coordinate perturbation coordinate plane coordinate quasigroup coordinate reading microscope coordinate representation coordinate retrieval coordinate ring coordinates coordinate search Coordinate Semantics coordinate simplex

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