| 释义 |
thread·er
\ˈthredə(r)\ noun
(-s)
: one that threads: as
a. : a worker who threads material into a machine or sets up a machine by threading
b.
(1) : a device for threading a needle
(2) : any of various devices for drawing a line through one or more narow openings or channels
c. : a device for cutting a screw thread
< bolt and pipe threaders > |