最終更新日：2022/12/23
例文
The
water
quality
of
the
Songhua
River
(Northeast
China)
was
of
concern,
especially
in
the
1980s
and
early
1990s,
and
there
were
many
studies
carried
out
on
this
aspect.
However,
only
one
or
several
independent
water
quality
indices
were
used
to
consider
the
effects
of
pollutants
on
the
water
quality,
for
instance,
heavy
metal
and
toxic
organic
pollutants.
The
combined
effects
of
multiple
indices
were
seldom
studied.
In
this
article,
based
on
the
environmental
monitoring
data,
the
water
quality
of
the
Songhua
River
was
analyzed
using
factor
analysis,
which
comprehensively
considered
six
indices
of
water
quality
of
each
monitoring
section.
復習用の問題
The water quality of the Songhua River (Northeast China) was of concern, especially in the 1980s and early 1990s, and there were many studies carried out on this aspect. However, only one or several independent water quality indices were used to consider the effects of pollutants on the water quality, for instance, heavy metal and toxic organic pollutants. The combined effects of multiple indices were seldom studied. In this article, based on the environmental monitoring data, the water quality of the Songhua River was analyzed using factor analysis, which comprehensively considered six indices of water quality of each monitoring section.
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