ballast bed

ballast bed 基本解释

道碴路基

ballast bed 用法和例句

1、ballast bed finisher.

平整道碴机

2、Causes of defects occurred in ballast bed with broad sleepers used in Xuzhou railway station and its treatment method

徐州站宽枕道床病害成因与整治

3、The Technology of the Treatment and Prevention for the Tunnel Ballast Bed Diseases with the Method of Raising Track Beams

采用抬轨梁整治隧道道床病害技术

重点词汇

ballast n. 压舱物，压载物；道渣，碎石；镇流器；<比喻>沉着 vt. 给某物装上压舱物；给…铺道渣；使稳定；使沉着