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单词 sub-epoch
释义

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sub-epoch
sub-epoch n.
Brit. /ˈsʌbˌiːpɒk/
,
/ˈsʌbˌɛpɒk/
,
U.S. /ˈsəbˌɛpək/
,
/ˈsəbˌiˌpɑk/
ΚΠ
1847 J. F. W. Herschel Results Astron. Observ. 248 For convenience of future reference, sub-epochs are calculated for each year of the interval over which the observations extended.
1940 Bull. Geol. Soc. Amer. 51 1402 Subepoch—subseries. These terms as herein proposed are applicable to the first subdivisions of epochs and series respectively.
2008 J. B. Olson Fossil Hunter i. 12 They lived roughly 50 million years ago during the early Eocene sub-epoch.
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