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07:59 Feb 24, 2012
This question was closed without grading. Reason: Answer found elsewhere
English to Russian translations [Non-PRO] Tech/Engineering - Metallurgy / Casting / устройство для определения и отображения различных уровней металлического расплава
English term or phrase:masking powers
This a consequence of the varying attenuation caused by the metal and the slag respectively. The melt and the slag cause different masking powers, related to their different density and composition.