main coal
Coal Mining
noun
1A main or principal seam of coal.
2Coal extracted from a main seam, of recognized good quality.
Origin
Early 18th century. Compare main.
| 单词 | main coal |
| 释义 | main coalCoal Mining noun 1A main or principal seam of coal. 2Coal extracted from a main seam, of recognized good quality. Origin |
| 随便看 |
英语词典包含243303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。