| 单词 | pit-prop |
| 释义 | > as lemmaspit-prop pit-prop n. a length of timber used to support the roof of a mine or mine shaft. ΘΚΠ society > occupation and work > workplace > places where raw materials are extracted > mine > [noun] > prop or support crown tree1449 punch1462 prop1613 slider1653 sole1653 yoking1653 stow-blade1681 pit-bar1708 fork1747 head tree1747 studdle1758 lock piece1778 pit-prop1794 puncheon1815 stow-fork1824 plank tubbing1839 sprag1841 gib1847 chock1853 Tom1858 bratticing1866 pack1867 breastboard1877 brattice1881 wall-plate1881 strap1883 stretcher1883 1794 J. Bailey & G. Culley Gen. View Agric. County of Northumberland 14 The price..of birch, aller, &c. for pit props, six feet long, and from four to six inches diameter 4 d. each. 1891 Times 31 Aug. 4/2 Pit-props, which are used as supports in the different workings in collieries. 1993 Forestry 66 120 The demands of the early industrial revolution for charcoal, pitwood etc. caused forest depletion, aggravated more recently by wartime demands, especially for pitprops for the South Wales coalfield. < as lemmas |
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