单词 | beta particle |
释义 | ˈbeta ˌparticle noun [countable] technical an electron or positron that is sent out by some radioactive substances 贝塔粒子,β粒子〔某些放射性物质释放出的电子或阳电子〕ˈbeta ˌparticle nounChineseSyllable |
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