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单词
hubble's constant
释义
WordReference Random House Unabridged Dictionary of American English © 2024
Hub
′
ble's con
′
stant,
[
Astron.
]
Astronomy
the ratio of the recessional velocity of galaxies to their distance from the sun, with current measurements of its value ranging from 50 to 100 km/sec per megaparsec.
after English. P.
Hubble
1950–55
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更新时间:2024/9/21 8:04:50