DIN EN ISO 13468-1:1997 塑料.透明材料光透射率总量的测定.第1部分:单束光发射仪
Plastics - Determination of the total luminous transmittance of transparent materials - Part 1: Single-beam instrument (ISO 13468-1:1996); German version EN ISO 13468-1:1996
The document covers the determination of the total luminous transmittance, in the visible region of the spectrum, of planar transparent and substantially colourless plastics, using...