80_20_rule
kx21
*
The
80
/20
Rule
*
Dr. Juran's
observation
of
the
"vital
few
and
trivial
many
":-
The
principle
that
20
percent
of
something
always
are
responsible
for
80
percent
of
the
results
,
became
known
as
Pareto's
Principle
or
the
80
/20
Rule
.
040513
...
...
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the
average
gas
molecule
speed
for
a
type
of
gas
is
less
than
than
0.2×(the
escape
velocity
),
http
://www.astronomynotes.com/solarsys/atmosesc.htm
060513
...
mp21k
http
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060513
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