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)合專門試驗論述了貨物列車在大坡道上長時間停留時溜逸與防溜的若干技術(shù)問題。 返回 long steep grade