道碴路基 的英文怎麼說
中文拼音 [dàochálùjī]
道碴路基
英文
ballast bed-
Coarse gravel or crushed rock laid to form a bed for roads or railroads
道碴用來鋪公路或鐵路路基的粗砂礫或碎石On the railway line nuder normal major repair cycle, rm - 80 full section undercutting ballast cleaning machine has enough excavation ability in working condition, productivity can come up with it ' s design standard
對于正常大修周期的線路上, rm80型全斷面道碴清篩機作業運行工況具有足夠的挖掘能力,作業效率基本上能夠達到其設計標準,這些在國外已經得到了充分的證明。High - speed track proposes higher demands for subgrade and bed. the application of ballastless slab track is the main tendency for assuring the high stability and smooth of the track
高速軌道對路基和道床提出了很高的要求,為保證軌道的強穩定性和高平順性,採用板式無碴軌道的結構形式已成為一種趨勢。
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