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单词 rack-table
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rack-table
rack-table n. Mining Obsolete = sense 6b.
ΘΚΠ
society > occupation and work > equipment > equipment for treating ores > [noun] > for washing ore > for tin
rack1839
rack-table1839
tin-frame1881
1839 A. Ure Dict. Arts 1245 The slope of the rack-table for washing the roasted tin ore is 7¾ inches in the 9 feet.
1877 H. Watts Dict. Chem. (new ed.) V. 800 The ore thus calcined, oxidised, and lixiviated, is washed once more on the rack-table, and the lighter parts removed.
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更新时间:2025/3/4 17:19:16