Broken stone, gravel, etc., used to form the bed of a railway, in which the sleepers are fixed.
| 单词 | θ214870 |
| 释义 | society > occupation and work > materials > raw material > stone or rock > [noun] > gravel, small, or broken stones > used as bed of railways (2) ballast1831 Broken stone, gravel, etc., used to form the bed of a railway, in which the sleepers are fixed. ballasting1837 The action or process of supplying with ballast (literally or figuratively). Also concrete: = ballast, n. |
| 随便看 |
|
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。