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1. Oxford Dictionary

   alpha radiation

   英式

   • n.
     ionizing radiation consisting of alpha particles, emitted by some substances undergoing radioactive decay.

   • noun: alpha radiation

2. • 更多解釋

   alpha radiation

   • IPA[ˌrādēˈāSHən]

   美式

   • n.
     ionizing radiation consisting of alpha particles, emitted by some substances undergoing ...

   Oxford American Dictionary