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单词 alum manufacturing
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alum manufacturing
alum manufacturing n.
ΚΠ
1851 Mechanics' Mag. 24 May 412/2 The employment of the spent shales from alum-manufacturing processes, for the manufacture of cement and hydraulic mortar.
1924 Pop. Mech. Mag. Apr. 497/2 Included in the works are an intake pier, pumping station..and an alum manufacturing plant.
2002 M. J. MacPhee et al. Trace Contaminants in Drinking Water Chemicals iii. 28 Aluminum metal is not used in alum manufacturing.
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