secpar
英['sekpɑːr]
美['sekpɑːr]
- n.秒差距(天文距离单位之一)
详细释义
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
相关词汇
- parsec 表示天体间距离的单位...
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