| 单词 | alpha ray |
| 释义 | alpha ray (once / 114751 pages) n WORD FAMILY alpha ray: alpha rays USAGE EXAMPLESEventually alpha rays were identified as helium atoms stripped of their electrons—that is, helium nuclei-—and beta rays as energetic electrons. Michael Hiltzik, Big Science(2015) If trapped inside the body, though, alpha rays can cause cancer. New York Times(Apr 10, 2011) This is due to the bombardment of the zinc sulphide by a type of ray called the alpha ray. Venable, Francis Preston, A Brief Account of Radio-activity(2010) n the radiation of alpha particles during radioactive decay Syn|Hyper alpha radiation ionizing radiation high-energy radiation capable of producing ionization in substances through which it passes corpuscular radiation, particulate radiationa stream of atomic or subatomic particles that may be charged positively (e.g. alpha particles) or negatively (e.g. beta particles) or not at all (e.g. neutrons) |
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