chadless punch

短语

词形变化

chadless punches 复数 chadless punches

释义与例句

n.
  1. 1.

    A paper tape punch that does not produce little pieces of paper. Instead, "the perforations are not completely cut out but the chads are permitted to remain attached to the perforated material (for example, tape)". (U.S. Patent 2,255,794, filed May 20, 1939)