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bn:04156571n
Noun Concept
SYL
No term available
ZH
近点年是地球围绕太阳的轨道运动中相继两次经过近日点所需要的时间。 Wikipedia
Relations
Sources
IS A
EN
astrometry
EN
time unit
EN
orbit period
EN
year
MEASURED PHYSICAL QUANTITY
EN
duration

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