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	oxymoron oyez Oyl, Olive oyster oyster bed Oyster card Oz oz Ozarks Ozawa, Seiji ozone ozone-friendly ozone layer Ozzie and Harriet P p. P2P P45 P60 PA pa p.a. PAC Pac 10 pace

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