| 单词 | set of timber(s |
| 释义 | > as lemmasset of timber(s b. Mining. In full set of timber(s: A frame for supporting the side of a level or shaft, or the roof of a gallery. ΘΚΠ society > occupation and work > equipment > mining equipment > [noun] > pit supports yoking1653 set1830 crib1839 tub1839 wedging crib1839 cribbing1841 ring crib1849 tack1849 tymp1883 1830 Gloss. Eng. Mining Terms (Cornwall) 22 in Q. Mining Rev. June Set of timber, a frame complete to support each side of the vein, level, or shaft. 1877 R. W. Raymond Statistics Mines & Mining 263 (note) The ‘set of timbers’ may perhaps be fairly assumed to represent 50 cubic yards of material removed. 1877 R. W. Raymond Statistics Mines & Mining 276 Replacing the old timbers with new square sets. < as lemmas |
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