请输入您要查询的英文单词：

　

单词 pulsar
释义

WordReference Random House Learner's Dictionary of American English © 2024
pul•sar /ˈpʌlsɑr/USA pronunciation   n. [countable]
  1. Astronomyan object in space, generally believed to be a rapidly rotating neutron star, that gives out pulses of radiation, esp. radio waves, very regularly.
See -puls-.
WordReference Random House Unabridged Dictionary of American English © 2024
pul•sar  (pul′sär),USA pronunciation n. 
  1. Astronomyone of several hundred known celestial objects, generally believed to be rapidly rotating neutron stars, that emit pulses of radiation, esp. radio waves, with a high degree of regularity.
  • puls(ating st)ar, on the model of quasar 1965–70

Collins Concise English Dictionary © HarperCollins Publishers::
pulsar /ˈpʌlˌsɑː/ n
  1. any of a number of very small extremely dense objects first observed in 1967, which rotate very rapidly and emit very regular pulses of polarized radiation, esp radio waves. They are thought to be neutron stars formed following supernova explosions
Etymology: 20th Century: from puls(ating st)ar, on the model of quasar
随便看

　

英语词典包含188688条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。

　

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间：2024/9/21 22:08:27