trackbed
美
英 
詞形變化
復數:trackbeds
英漢解釋
例句
FIXED RAILWAY EQUIPMENT. GEOTEXTILES FOR TRACKBED CONSTRUCTION FOR RAILWAY LINES.
鐵路固定設備.鐵路道床建設用土工織物
Construction Technology for Steel Spring Floated Trackbed Turnout in Urban Transit
城鐵鋼彈簧浮置板道床道岔施工技術
Practices and Revelation of Trackbed Elevation Project in Jin-Pu Line
津浦線抬道工程的實踐與啟示