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单词
pyrheliometer
释义
WordReference Random House Unabridged Dictionary of American English © 2024
pyr•he•li•om•e•ter
(pī
ə
r′hē lē om
′
i tər, pir′-),
USA pronunciation
n.
[
Astrophysics.
]
an instrument for measuring the total intensity of the sun's energy radiation.
1860–65;
pyr
- +
helio
- + -
meter
pyr•he•li•o•met•ric
(pī
ə
r′hē lē ə me
′
trik, pir′-),
USA pronunciation
adj.
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更新时间:2025/11/15 8:27:41