| 单词 | opaque medium |
| 释义 | opaque medium [ō`pāk ´mēd·ē·ǝm] OPTICS A medium impervious to rays of light, that is, not transparent to the human eye. PHYSICS 1. A medium which does not transmit electromagnetic radiation of a specified type, such as that in the infrared, x-ray, ultraviolet, and microwave regions. 2. A medium which prevents the passage of particles of a specified type. |
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