请输入您要查询的英文单词:

 

单词 arcsecond
释义
arcsecond
  • 简明释义
  • n.弧秒(量度平面角的单位,是弧分的六十分之一)
  • 网络释义
  • 1

    ?角秒

    1°中包含了60角分(arcminute),写作60'。1角分中含有60角秒arcsecond),写作60"。一台好的望远镜在良好的天气条件下可以分辨出天球上小至1"的细节。

  • 2

    ?弧秒

    ... arcminute——弧分 arcsecond——弧秒 asteroid——小行星 ...

  • 权威例句
  • 1.

    NASA's Jet Propulsion Laboratory, it will be possible to measure stellar positions to within 20 millionths of an arcsecond by 2005.

    ECONOMIST: A roadmap for planet-hunting

  • 2.

    Viewed from a distance of ten light-years, the sun's side-to-side wobble due to Jupiter causes its position to change by 1.6 thousandths of an arcsecond.

    ECONOMIST: A roadmap for planet-hunting

  • 3.

    It will have two telescopes mounted at opposite ends of a ten-metre boom, and will be able to measure astrometric wobbles as small as a millionth of an arcsecond.

    ECONOMIST: A roadmap for planet-hunting

  • 词源
1

arcsecond:

arc +? second

FROM: wiktionary
随便看

 

英汉双解词典包含3185865条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2025/8/5 21:06:48