narrow work
Mining
noun
A narrow gallery driven into a seam, vein, etc.; a system of mining that makes use of such passages.
Origin
Mid 19th century; earliest use found in George Greenwell (1821–1900).
| 单词 | narrow work |
| 释义 | narrow workMining noun A narrow gallery driven into a seam, vein, etc.; a system of mining that makes use of such passages. Origin |
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