“half-value layer”的概念、定义、翻译、参考文献-科学参考

单词	half-value layer
释义	half-value layer Encyclopedia 工学半值层释 half-value layer半值层将某种特定屏蔽材料置于给定射线的路径上，可以将辐射场的强度减少到原来的一半的屏蔽层厚度。又称半减弱厚度。 Chemistry ＞放射化学与辐射化学＞辐射化学＞释义 half thickness; half-value layer (HVL)半厚度＞放射化学与辐射化学＞辐射化学＞释义 half-value layer (HVL)半值层
随便看	proper Lorentz transformation properly canonical representation properly contained filter properly containing filter properly convex function properly convex subset properly differentiable function properly discontinuous action properly discontinuous group properly divergent sequence properly divergent series properly elliptic properly elliptical properly elliptical operator properly elliptic equation properly equivalent form properly hyperbolic properly infinite algebra properly infinite projection properly nilpotent element properly posed problem properly primitive form properly triangular matrix proper maintenance method of photographic lens proper map

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