单词 | effective radius |
释义 | effective radius [ǝ¦fek·tiv `rād·ē·ǝs] ASTRONOMY The distance from the center of an external galaxy within which half its luminosity is included. ORDNANCE The radius of a circle having its center at the center of impact of a nuclear weapon, and within which a specified dosage of radiation is equaled or exceeded within a given period of time. |
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