单词	beta particle
释义	beta particleˈbeta ˌparticle noun [countable] technical an electron or positron that is sent out by some radioactive substances
随便看	Nepal Nepalese Nepali nephew nepotism nepotistic Neptune nerd nerdy Nero Neruda, Pablo nerve nerve cell nerve centre nerve gas nerveless nerve-racking nervous nervous breakdown nervously nervousness nervous system nervy Nesbitt, Rab C. -ness

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