Alemán ⇄ Francés Inglés Polaco Ruso

Halbwertsdicke f
apar.	half-value layer (thickness)
biol.	half-thickness; attenuation half-thickness (half-value layer, half-value thickness, first, second, ...)
fís.	half-value depth
físic.	half-value layer; half-value thickness
quím.anal.	half-thickness (in radiometry)