| 单词 | Lehigh jig |
| 释义 | Lehigh jig [`lē´hī ´jig] MINING ENGINEERING A plunger-type jig in which check valves open on the upstroke of the plunger, makeup water is introduced with the feed, the screen plate is at two levels, and the bottom of the discharge end is hinged; used to wash anthracite. |
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