sidereal period

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数据源: ai_enrichment
恒星周期是指一个天体相对于遥远恒星完成一次轨道运行所需的时间,常用于天文学领域。

用法要点

句型搭配

通常用作名词短语,在句子中作主语或宾语,描述天体的轨道特性。

• The sidereal period of Mars is about 687 days.
• Scientists calculate the sidereal period to study orbital mechanics.

介词用法

常与介词'of'连用,表示属于某个天体的周期,如'the sidereal period of Earth'。

• The sidereal period of the Moon is 27.3 days.
• We measured the sidereal period of that exoplanet.

语域说明

主要用于学术和科学语境,如天文学、物理学,日常对话中较少使用。

• In astronomy class, we learned about sidereal periods.
• The research paper discusses sidereal periods in detail.

基础例句

The sidereal period of Earth is 365.256 days, which is why we have leap years.

地球的恒星周期是365.256天,这就是为什么我们有闰年。

In our science project, we compared the sidereal periods of different planets.

在我们的科学项目中,我们比较了不同行星的恒星周期。

Can you explain what a sidereal period means in simple terms?

你能用简单的话解释一下恒星周期是什么意思吗?

高级例句

Astronomers use the sidereal period to calibrate telescopes for precise celestial observations.

天文学家利用恒星周期来校准望远镜,以进行精确的天体观测。

The research indicates that the sidereal period of exoplanets can vary due to gravitational interactions.

研究表明,系外行星的恒星周期可能因引力相互作用而变化。

In astrophysics, calculating the sidereal period is essential for modeling orbital dynamics.

在天体物理学中,计算恒星周期对于模拟轨道动力学至关重要。

高频搭配

verb

calculatemeasuredetermineobservestudy

adjective

longshortaccuratepreciserelative

noun

orbitrevolutioncycledurationtime

adverb

approximatelyexactlycloselytypically

preposition

offorinwith

phrase

sidereal period of a planetsidereal period calculationsidereal period vs. synodic period

常见错误

❌ 错误:The sidereal period for Earth is 24 hours.
✓ 正确:The sidereal period of Earth is about 23 hours and 56 minutes.

错误:将恒星周期与地球自转周期混淆。正确:恒星周期是地球绕太阳公转相对于恒星的时间,约为365.256天,而自转周期是约23小时56分钟。

❌ 错误:Sidereal period means the same as synodic period.
✓ 正确:Sidereal period differs from synodic period, which is relative to the Sun.

错误:认为恒星周期与会合周期相同。正确:恒星周期是相对于恒星的轨道时间,而会合周期是相对于太阳的,两者在天文学中有区别。

近义词辨析

orbital period

轨道周期通常泛指天体完成一次轨道运行的时间,而恒星周期特指相对于遥远恒星的周期,更精确用于天文学。

The orbital period of Mars is often given as its sidereal period of 687 days.

revolution period

公转周期强调天体绕中心天体的完整转动,与恒星周期类似,但恒星周期更侧重于恒星参考系,避免与自转混淆。

The revolution period of Jupiter is approximately equal to its sidereal period of 11.86 years.