Physics. The level of radiation arising from cosmic rays and other natural sources. Also attributive, as background count n. the result (in counts or…
单词 | θ79372 |
释义 | the world > matter > physics > atomic nucleus > radioactivity > ionizing radiation > [noun] > cosmic rays > level of radiation from (2) background1930 Physics. The level of radiation arising from cosmic rays and other natural sources. Also attributive, as background count n. the result (in counts or… background count1950 Physics. The level of radiation arising from cosmic rays and other natural sources. Also attributive, as background count n. the result (in counts or… |
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