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单词 perfecting machine
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perfecting machine
perfecting machine n. a printing machine on which the sheet, as it passes through, is printed first on one side and then on the other; also called perfecter, perfector.
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society > communication > printing > printing machine or press > [noun] > printing on both sides
perfecting machine1847
perfecting press1858
perfecter1899
perfector1907
1847 Mechanics' Mag. Jan. 36/1 Mr. Little..has his perfecting machine..(as those which print a sheet of paper on both sides before leaving the machine are called).
1973 J. Moran Printing Presses ix. 133 Between 1836–63 Napier made at least eighty-seven perfecting machines.
2002 Amer. Printer (Nexis) Sept. 6 They are available as single-sided or perfecting machines.
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