元となった辞書の項目
airmass
noun
(physics,
meteorology)
a
widespread
body
of
air,
the
properties
of
which
can
be
identified
as:
(a)
having
been
established
while
that
air
was
situated
over
a
particular
region
of
the
Earth's
surface
(airmass
source
region)
and
(b)
undergoing
specific
modifications
while
in
transit
away
from
the
source
region.
An
air
mass
is
often
defined
as
a
widespread
body
of
air
that
is
approximately
homogeneous
in
its
horizontal
extent,
particularly
with
reference
to
temperature
and
moisture
distribution;
in
addition,
the
vertical
temperature
and
moisture
variations
are
approximately
the
same
over
its
horizontal
extent.
意味（1）
(physics,
meteorology)
a
widespread
body
of
air,
the
properties
of
which
can
be
identified
as:
(a)
having
been
established
while
that
air
was
situated
over
a
particular
region
of
the
Earth's
surface
(airmass
source
region)
and
(b)
undergoing
specific
modifications
while
in
transit
away
from
the
source
region.
An
air
mass
is
often
defined
as
a
widespread
body
of
air
that
is
approximately
homogeneous
in
its
horizontal
extent,
particularly
with
reference
to
temperature
and
moisture
distribution;
in
addition,
the
vertical
temperature
and
moisture
variations
are
approximately
the
same
over
its
horizontal
extent.
