long steep grade
常見例句
- Based on special experiments, this paper is devoted to several technical issues of run- away of freight trains during long detention on electrified steep grade and associated countermeasures.
結(jié)合專門試驗(yàn)論述了貨物列車在大坡道上長時(shí)間停留時(shí)溜逸與防溜的若干技術(shù)問題。 返回 long steep grade