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单词 pulsar
释义 pulsar
 /pul"sahr/,  n.  
 Astron. one 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.
 [1965-70; puls(ating st)ar, on the model of QUASAR]
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