| 单词 | pion double-charge exchange |
| 释义 | pion double-charge exchange [`pī´än ¦dǝb·ǝl ¦chärj iks`chānj] NUCLEAR PHYSICS A nuclear reaction in which a positive pion interacts with a nucleus by a two-step process and a negative pion emerges, accompanied by the conversion of two neutrons in the nucleus to two protons, or the inverse reaction. |
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