Physics. A number of high-energy subatomic particles appearing together; spec. a group produced in the atmosphere by a cosmic-ray particle.
| 单词 | θ79374 |
| 释义 | the world > matter > physics > atomic nucleus > radioactivity > ionizing radiation > [noun] > cosmic rays > group of particles (2) shower1933 Physics. A number of high-energy subatomic particles appearing together; spec. a group produced in the atmosphere by a cosmic-ray particle. Subcategories:— image of (1) |
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