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单词 rag frame
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rag frame
rag frame n. Mining an inclined table for partially concentrating slimes.
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society > occupation and work > equipment > equipment for treating ores > [noun] > for washing ore > table or frame
frame1778
sleeping table1839
sweeping-table1839
sweep-table1839
bumping table1877
rag frame1904
1904 Eng. Dial. Dict. Rag frame.
1920 Conquest Nov. 17/1 The stream is dammed and the sludge or slime settles, and is allowed to flow through launders which feed automatically-tilting tables of the most ingenious structure... These tables are called rag frames.
1964 A. Nelson Dict. Mining 358 Rag frame, a broad, slightly inclined wooden frame for the rough concentration of slimes.
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