| 单词 | kerma |
| 释义 | Word Frequency kerma(ˈkɜːmə) noun physics the quotient of the sum of the initial kinetic energies of all the charged particles liberated by indirectly ionizing radiation in a volume element of a material divided by the mass of the volume element. The SI unit is the gray Word origin C20: k(inetic) e(nergy) r(eleased per unit) ma(ss) |
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