“ballastless track”的概念、定义、翻译、参考文献-科学参考

单词	ballastless track
释义	ballastless track Encyclopedia 工学无砟轨道释 ballastless track无砟轨道由钢轨、扣件及混凝土轨下基础构成的铁路轨道。由于轨下基础不再采用传统的碎石砟道床，而是采用混凝土结构，故称无砟轨道。工学道床结构释 ballastless track无砟道床不用道砟铺设的道床。又称整体道床，是相对于有砟道床而言的。通常以钢筋（或沥青）混凝土取代传统的道砟作为道床材料。钢筋混凝土可以在现场浇筑，也可采用预制件，或者两者相结合。无砟道床适用于坚实基础，如隧道、桥梁和经过加强处理的土质路基。
随便看	environmental weeds environmental wind tunnel Environment and Development Report of the People's Republic of China environment and disaster monitoring satellite environment and health promotion strategy Environment and History Environment and Plant Protection Institute,Chinese Academy of Tropical Agricultural Sciences environment and resources court environment and resources dispute environment and resources emergency regulations environment and resources judicial specialization environmentand resources law environment-assisted fatigue in liquid environments Environment-behavior analysis environment-behavior theory environment-centered system environment concept of Zhuangzi environment condition environment condition for electronic product environment control system for different applications environment control table environment dependent tight binding potential environment-dependent tight-binding potential environment factors of acoustic field environment-friendly ecological rubber plantation

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