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背单词
keypunches
keypunches
美
英
n.
键控芽孔机;盘式穿孔机;键盘穿孔机
v.
用打孔机打孔
网络
键控穿孔机;按键打孔;键盘凿孔机
词形变化
复数:
keypunches
过去分词:
keypunched
现在分词:
keypunching
英汉解释
n.
1.
键控芽孔机
2.
盘式穿孔机
3.
键盘穿孔机
v.
1.
用打孔机打孔
英英解释
n.
1.
a
machine
,
operated
by
keyboard
,
that
punches
holes
in
cards
or
paper
for
use
in
a
data
-
processing
system
,
now
largely
obsolete
v.
1.
to
use
a
keypunch
to
punch
holes
in
a
card
or
paper
tape
for
data
entry
into
a
computer
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