英语词汇arcsecond怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

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

arc +? second

FROM: wiktionary

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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
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