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DICT.TW English-Chinese Dictionary 英漢字典
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3 definitions found
From:
DICT.TW English-Chinese Medical Dictionary 英漢醫學字典
iris diaphragm
名詞
虹膜狀光闌,虹彩光闌
From:
Webster's Revised Unabridged Dictionary (1913)
I·ris di·a·phragm
.
An
adjustable
diaphragm
,
reminiscent
of
the
iris
of
the
eye
in
its
action
,
by
which
the
diameter
of
an
approximately
circular
opening
may
be
controlled
,
as
for
regulating
the
aperture
of
a
lens
;
it
consists
of
a
number
of
movable
thin
curved
plates
fastened
at
regular
intervals
around
the
inside
of
a
ring
,
the
positions
of
which
are
simultaneously
adjusted
by
a
single
knob
on
the
outside
of
the
lens
.
It
is
used
in
cameras
and
microscopes
.
◄
►
From:
WordNet (r) 2.0
iris
diaphragm
n
:
diaphragm
consisting
of
thin
overlapping
plates
that
can
be
adjusted
to
change
the
diameter
of
a
central
opening
[
syn
:
iris
]
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