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2 definitions found
From:
DICT.TW English-Chinese Dictionary 英漢字典
periastron
近星點
From:
Webster's Revised Unabridged Dictionary (1913)
Per·i·as·tron
n.
Astron.
That
point
,
in
the
real
or
apparent
orbit
of
one
star
revolving
around
another
,
at
which
the
former
is
nearest
to
the
latter
.
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