| 单词 | θ212930 |
| 释义 | society > occupation and work > equipment > equipment for treating ores > [noun] > for washing ore > pit or trough (6) washing-trough1557 wash-trough1557 Mining. A trough in which ore is washed. launder1671 A trough for water, either cut in the earth, or formed of wood; esp. in Mining, a trough for washing the ore clean from dirt. strake1758 A wooden box without ends, used for the same purpose. riffler1839 A trough or sluice containing one or more transverse strips or slats to break or slow the flow of a liquid. trough1877 In spec. uses. Mining. (a) An oblong tank in which ores are washed; a rocker or buddle; (b) A passage cut through a wall or pillar of coal: = thirling… |
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