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单词 Geiger-Briggs rule
释义 Geiger-Briggs rule
[¦gī·gǝr `brigz ´rül]
NUCLEONICS
The rule that the range of an alpha ray in dry air, at 15°C and 1 atmosphere, above 5 centimeters, is proportional to its initial velocity raised to the 3.26 power; an improvement on the Geiger formula.
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