A line (straight unless caused to deviate) along which physical energy other than light is radiated (analogous to a ray of light, sense 1a); a…
| 单词 | θ76243 |
| 释义 | the world > matter > physics > electromagnetic radiation > heat > [noun] > emission or diffusion > energy produced by > directed flow (5) ray1813 A line (straight unless caused to deviate) along which physical energy other than light is radiated (analogous to a ray of light, sense 1a); a… beam1860 transferred. A similar ray of heat. Subcategories:— centre of (1) — meeting point of (2) |
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