secpar
导读：secpar读音音标
secpar意思解释
secparn.a unit of astronomical length based on the distance from Earth at which stellar parallax is 1 second of arc; equivalent t
secpar意思解释
secparn.a unit of astronomical length based on the distance from Earth at which stellar parallax is 1 second of arc; equivalent t
secpar读音音标
secpar意思解释
secparn.
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
同义词：parsec
英英释义
secparn.
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
同义词：parsec
