单词	annihilation radiation
释义	annihilation radiation noun : radiation produced by the mutually annihilating coalescence of a particle and its antiparticle from which two radiation quanta travel in opposite directions with a wavelength corresponding to that of very short gamma rays, being approximately 0.024 angstrom Word History First Known Use 1935, in the meaning defined above
随便看	hind-the-scenes hindberries hindberry hindbrain hindbrains hindcast Hindemith hindenburg Hindenburg hinder hinder from hinderances hindered hindered from hinderer hinderers hindering hindering from hindering impediment hinderingly hinderlands hinderlings hinderlins hindermost hinders

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