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单词 parting glass
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parting glass
parting glass n. Obsolete a glass vessel used in parting gold and silver with acid.
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society > occupation and work > equipment > metalworking equipment > [noun] > equipment for testing quality of metal
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1594 H. Plat Jewell House 79 Water in a parting glasse vpon warme imbers.
1679 Philos. Trans. 1677 (Royal Soc.) 12 1048 All the Gold lying, like black dirt, at the bottom, which being washed out is put into small Parting-Glasses, and set over the Sand with fair Conduit-water for an hour.
1825 ‘J. Nicholson’ Operative Mechanic 766 Parting glasses..ought to be very well annealed, and chosen free from flaws.
extracted from partingn.
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