| 释义 |
per·fo·ra·tor
\ˈ ̷ ̷ ̷ ̷ˌrād.ə(r), -ātə-\ noun
(-s)
: one that perforates: as
a. : a prehistoric stone or bone implement for drilling or boring holes
b. : a mechanical device for punching holes or designs through or into a flat surface
< check perforator >
< hand perforator that punches up to 12 sheets without tearing >
< railroads use perforators for dating tickets — Office Appliance Manual >
specifically : a telegraphic apparatus that perforates a continuous tape according to code (as for use in a tape transmitter)
c. : an operator of a machine that makes perforations (as in paper or leather)
d. : a device resembling a gun for puncturing an oil well casing at the oil stratum |