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无砟道床
释义
无砟道床
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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。
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electromagnetic / ultrasonic integrated test instrument
electromagnetic ultrasonic internal detector
electromagnetic unit system
electromagnetic valve
electromagnetic variable
electromagnetic vertial ring high gradient magnetic separator
electromagnetic vibrating type seeder
electromagnetic vibroseis
electromagnetic viscosity
electromagnetic voltage transformer
electromagnetic wave
electromagnetic wave absorbers
electromagnetic wave absorbing materials
electromagnetic wave diffraction
electromagnetic wave height measurement
electromagnetic wave in magnetosphere
electromagnetic wave irradiation breeding
electromagnetic wave logging device
electromagnetic wave propagation
electromagnetic wave scattering
electromagnetic (wave) spectrum
electromagnetic wave spectrum
electromagnetic wave transparent material
electromagnetic wave travel time
electromagnet iron
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更新时间:2026/1/10 13:35:14