| 单词 | coal plough |
| 释义 | > as lemmascoal plough j. Coal Mining. More fully coal plough. A machine with cutting blades that removes a thin strip of coal when hauled along the coalface. ΘΚΠ society > occupation and work > equipment > mining equipment > [noun] > coal-cutting machines iron man1827 overcutter1946 plough1946 cutter-loader1948 shearer1956 trepanner1956 1946 Financial Times 11 June 1/5 The mission asks for the development of..the coal plough in machine mining and for the use of the Resonance conveyor. 1950 Trans. Inst. Mining Engineers 109 273 The coal seams in this country are too hard to allow of the plough being successfully used. 1964 A. Nelson Dict. Mining 335 Normally, on a wide face, and working 6 hr, a plough will produce 800 tons and more of coal in a 3 ft thick seam. 1982 Sci. Amer. Sept. 69/3 A specialized machine, either a plow or a shearer, travels along the face on a guide or track, cutting the coal and depositing it on a conveyor. 2001 U.S. Patent 6,186,597 1 Coal ploughs used successfully for many years in underground long wall face workings have pick holders arranged on the plough heads. < as lemmas |
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