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ducol-punched card system meaning in English

12行穿孔卡片系统, 每列多孔卡片系统

Related Words

  1. ducol steel
  2. ducol punched card
  3. alphabetical punch
  4. ainsworth punch
  5. segmented punch
  6. interstage punch
  7. rocket punch
  8. punched needle
  9. die punching
  10. reproducing punch
  11. ducol steel
  12. ducol-punched card
  13. ducolege
  14. ducolet
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