英语单词分类 轻松记单词

parsec

parsec基本解释

n.表示天体间距离的单位

parsec同义词

  • secpar秒差距(天文距离单位之一...

parsec英英释义

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