prepunch

vt.

预先在…上打孔；

Prepunch press pumps forming line capacity
Question of initiation of lead azide detonation in a prepunchthrough electric field
SEMI-TUBULAR PUNCH RIVET FOR PRE-PUNCHLESS JOINING OF A FIBER COMPOSITE COMPONENT TO A METAL COMPONENT
Blank punching apparatus
Variable punch press system for four color work
Apparatus for applying indicias to sheets
Production of multiple-copy business forms
PRE-RIG PUNCH-OUT
Post-imaging punching apparatus and method
All That Glitters Is Not De La Hoya; Unassuming Fighter Lets Whitaker Deliver Pre-Bout Punch Lines