| 单词 | hanging-coal |
| 释义 | > as lemmashanging-coal hanging-coal n. Mining that which hangs or leans over the working. ΘΚΠ society > occupation and work > workplace > places where raw materials are extracted > mine > [noun] > part leaning over working hanging-wall1778 side-waver1849 hanging-coal1881 hanging-side1881 1881 Trans. Amer. Inst. Mining Engineers 1880–1 9 144 Hanging-coal, a portion of the coal-seam which, by the removal of another portion, has had its natural support removed, as in holing. < as lemmas |
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