| 单词 | pulsar |
| 释义 | Word Frequency pulsar(ˈpʌlˌsɑː) noun 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 Word origin C20: from puls(ating st)ar, on the model of quasar |
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