| 单词 | crab-roller |
| 释义 | > as lemmascrab-roller crab-roller n. Printing a short roller mounted at an angle on a larger one so as to travel back and forth, distributing the ink evenly. ΚΠ 1889 Cent. Dict. Crab-roller,..a small roller which distributes printing-ink on the ink-cylinder of the Adams printing-press: so called because its motion is sidewise and apparently diagonal. 1896 Amer. Bk.-maker Aug. 37/1 The ‘crab-roller’ is yet known to some Adams pressmen. It was an ingenious little mechanism, having a sort of sideways-backward movement. < as lemmas |
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