| 单词 | alpha ray |
| 释义 | Definition of alpha ray in English:alpha raynoun
OriginEarly 20th century; earliest use found in Ernest Rutherford (1871–1937), physicist. Definition of alpha ray in US English:alpha raynoun
OriginEarly 20th century; earliest use found in Ernest Rutherford (1871–1937), physicist. |
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