Mining. A screen used when stamping ores.
| 单词 | θ212953 | 
| 释义 | society > occupation and work > equipment > equipment for treating ores > 			[noun]		 > for separating or sorting ore by size or weight (5)		 grate1778 Mining. A screen used when stamping ores. percussion table1839 an apparatus for sorting ores according to weight, consisting of a slightly inclined table or frame which is vibrated and periodically allowed… classificator1856 = classifier, n. 2. Obsolete. classifier1856 A machine or device for screening or sizing mixtures of solid particles, esp. crushed ore. grating1869 The perforated plate used for separating large from small ore; also, the process of sorting ore with grates.  | 
	
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