| 单词 |
upstoop |
| 释义 |
ˈupstoop Mining. (See quots.)
1883Gresley Gloss. Coal-mining 269 When a heading is driven to a point at which another should be put in or meet it at right angles.., the first-named heading is called up-stoop. 1886J. Barrowman Sc. Mining Terms 69 A working room is up stoop or in stoop when its length is equal to the side of the pillar to be formed. |
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