Word · Frequency #18100
pulsar
脉冲星
核心释义
a small, extremely dense neutron star that rotates very fast and emits regular pulses of radiation
- 1.
周期性发射无线电脉冲的旋转中子星。
A rotating neutron star that emits radio pulses periodically.
周期性发射无线电脉冲的旋转中子星。
用法In use
Astronomers discovered a new pulsar in the southern sky.
用法提示:pulsar 为可数名词,此处作 discovered 的宾语,指脉冲星。
The new telescope lets scientists observe pulsars in great detail.
用法提示:pulsars 是 pulsar 的复数形式,在此作 observe 的宾语。
Every few seconds, the pulsar's radio beam sweeps across Earth.
用法提示:pulsar's 是名词所有格形式,表示脉冲星的(波束)。
a pulsar
Astronomers discovered a pulsar.
天文学家发现了一颗脉冲星。
pulsar + verb
This pulsar emits regular radio pulses.
相关词与表达Connections
搭配Collocations
- millisecond pulsar
- 毫秒脉冲星
- A millisecond pulsar can rotate hundreds of times per second.毫秒脉冲星每秒可以旋转数百次。
- pulsar timing
- 脉冲星计时
- Pulsar timing helps scientists detect tiny changes in the rotation of the star.脉冲星计时帮助科学家探测恒星自转的微小变化。
- binary pulsar
- 双脉冲星
- The discovery of a binary pulsar provided strong evidence for gravitational waves.双脉冲星的发现为引力波提供了有力证据。
- pulsar wind nebula
- 脉冲星风云
- The Crab Nebula is a famous pulsar wind nebula.蟹状星云是一个著名的脉冲星风云。
- pulsar signal
学习提示Learner notes
记忆技巧Memory Tip
pulsar 里藏着 pulse(脉冲),联想它旋转时发出规律脉冲,像宇宙灯塔一样。
语境与语域Context & Register
语域:neutral 常见场景:天文学研究、科普文章、天文课堂 这个词是专业的天文学术语,通常用于科学语境,语气中性,没有明显的口语或书面语倾向,多出现在学术论文、科普读物及天文科普讲座等场合。
发音与拼写Pronunciation & Spelling
No common English word rhymes with pulsar /ˈpʌlsɑː/. These lookalikes share the -ar spelling but sound different: solar, polar, collar, altar end in /ə/; liar ends in /aɪə/; guitar ends in /tɑː/ and is stressed on the final syllable. Do not pronounce pulsar like any of them.
一起学习词形Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.