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单词
heliometrically
释义
WordReference Random House Unabridged Dictionary of American English © 2024
he•li•om•e•ter
(hē′lē om
′
i tər),
USA pronunciation
n.
Astronomy, Optics
a telescope with a divided, adjustable objective, formerly used to measure small angular distances, as those between celestial bodies.
1745–55;
helio
- + -
meter
he•li•o•met•ric
(hē′lē ə me
′
trik),
USA pronunciation
he′li•o•met
′
ri•cal
,
adj.
he′li•o•met
′
ri•cal•ly
,
adv.
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更新时间:2025/10/15 4:34:02