元となった辞書の項目
k-value
noun
thermal
conductivity;
the
time
of
rate
of
heat
flow
through
a
unit
area
of
a
homogeneous
material
in
a
direction
perpendicular
to
isothermal
planes
induced
by
a
unit
temperature
gradient.
In
English
(inch-pound)
units
of
measurement;
it
is
the
number
of
BTUs
that
pass
through
a
1
inch
thickness
of
a
square
foot
sample
of
material
in
1
hour
with
a
temperature
difference
between
the
two
surfaces
of
1
degree
F.
意味（1）
thermal
conductivity;
the
time
of
rate
of
heat
flow
through
a
unit
area
of
a
homogeneous
material
in
a
direction
perpendicular
to
isothermal
planes
induced
by
a
unit
temperature
gradient.
In
English
(inch-pound)
units
of
measurement;
it
is
the
number
of
BTUs
that
pass
through
a
1
inch
thickness
of
a
square
foot
sample
of
material
in
1
hour
with
a
temperature
difference
between
the
two
surfaces
of
1
degree
F.
