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3 definitions found
From:
DICT.TW English-Chinese Dictionary 英漢字典
par·fo·cal
/ˌpɑrˈfokəl/
等焦距
From:
DICT.TW English-Chinese Medical Dictionary 英漢醫學字典
par·fo·cal
/(ˈ)pɑrˈfokəl/
形容詞
From:
Webster's Revised Unabridged Dictionary (1913)
Par·fo·cal
a.
Opt.
With
the
lower
focal
points
all
in
the
same
plane
; --
said
of
sets
of
eyepieces
so
mounted
that
they
may
be
interchanged
without
varying
the
focus
of
the
instrument
(
as
a
microscope
or
telescope
)
with
which
they
are
used
.
“the
convenience
of
a
microscope
with
parfocal
objective
lenses”
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