Parsec
['pɑːsek] or ['pɑr,sɛk]
解釋/意思:
(noun.) a unit of astronomical length based on the distance from Earth at which stellar parallax is 1 second of arc; equivalent to 3.262 light years.
戈登編輯--From WordNet
['pɑːsek] or ['pɑr,sɛk]
(noun.) a unit of astronomical length based on the distance from Earth at which stellar parallax is 1 second of arc; equivalent to 3.262 light years.
戈登編輯--From WordNet