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heliometer
heliometer
美
英
n.
【天】量日仪
网络
太阳仪;测日计
词形变化
复数:
heliometers
英汉解释
n.
1.
【天】量日仪
英英解释
n.
1.
a
refracting
telescope
with
a
divided
objective
that
is
used
to
measure
small
angular
distances
between
astronomical
objects
or
points
on
the
Moon
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