单词	pulsar
释义	pulsar /ˈpʌlsɑː / noun Astronomy A celestial object, thought to be a rapidly rotating neutron star, that emits regular pulses of radio waves and other electromagnetic radiation at rates of up to one thousand pulses per second.Black holes, the cosmic microwave background, pulsars, neutron stars, gravitational lenses, gravity waves - these are just a few of the phenomena that would make no sense without general relativity.... These emanations come from rapidly spinning neutron stars called pulsars - rotating beacons that periodically send energy in the direction of the earth. The object is being stimulated by jets from a rapidly spinning (about thirty times a second) neutron star called a pulsar. Origin From puls(ating st)ar, on the pattern of quasar.
随便看	putty medal putty-root putty work putu Putumayo River put up put-up-able-with put up a fight putu pap putupap put up or shut up put-uppable-with put-up price put up the shutters put up with puture put words into someone's mouth put years on (or take years off) someone put-you-up putz putza Putzfrau puukko puuko puu puu

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