pulsars的音标：pulsars的英式发音音标为：['pʌlsɑ:z]pulsars的美式发音音标为：['pʌlsɑz]...

Some pulsars keep time better than the earth's most accurate clocks.某些脉冲星发送脉冲比地球上最精确的时钟都准时。They have discovered now , previou sly unimagined objects - pulsars, quasars, and black holes.他们发现了以往想象不到的新客体 —— 脉冲星 、 类星体和黑...

n.脉冲星，（快速）脉冲射电源( pulsar的名词复数 )...