亚洲国产精品视频中文字幕,毛片亚洲AV无码精品国产午夜,亚洲国产精品色婷婷,国产综合日韩精品第16页

單詞乎

parsec

音標(biāo)['pɑ:sek]
parsec是什么意思、parsec怎么讀

parsec漢語翻譯

n. 秒差距(天體距離單位)

parsec英語解釋

名詞 parsec:

  1. 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
    同義詞：secpar

parsec詳細(xì)解釋

par.sec

n.（名詞）
A unit of astronomical length based on the distance from Earth at which stellar parallax is one second of arc and equal to 3.258 light-years, 3.08'×03 kilometers, or .98 × 0 3 miles.
秒差距：天文學(xué)自地球起的距離單位，星視差為角秒，等于3.258光年，3.08'×03公里，或.98×0 3英里

來源：
par(allax)
par(allax)
sec(ond)
sec(ond)

0
糾錯(cuò)

最新應(yīng)用