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検索内容:
manganese-55
chromium-54
noun
chromium-52
noun
506U78
noun
Area 51
name
(informal,
US,
military,
aviation,
research,
espionage,
ufology)
A
secret
military
facility,
an
airport,
an
airbase
in
Nevada
Test
and
Training
Range,
Nevada,
United
States;
A
military
base
in
Nevada,
where
advanced
military
aircraft
are
developed;
foreign
military
aircraft
are
evaluated;
and
rumored
to
be
where
the
US
government
hides
extra-planetary
alien
visitors.
B-52
noun
Gliese 581
name
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