質量衰減係數(μ/ρ)﹕
一、將直線衰減係數除以密度而得。
the difference of counts that photon strikes on the detector with and without the wood, which the mass attenuation coefficient can be determined.
73 請問質量衰減係數(μ/ρ)的物理意義為何? (A)光子與單位質量物質的作..-阿摩線上測驗