“field index”的概念、定义、翻译、参考文献-科学参考

单词	field index
释义	field index [`fēld ´in´deks] ^NUCLEONICS The constant n for a betatron in which the magnetic field strength at radius r is equal to B₀ (r/R )^-n, where R is the radius of equilibrium orbit of an electron, and B₀ is the corresponding magnetic field. Also known as n value.
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