Photography - transmission and reflection densitometers - method for determining performance 攝影技術(shù).透射和反射光密度計(jì).性能測定方法
Graphic technology - process control - optical , geometrical and metrological requirements for reflection densitometers for graphic arts use 圖形技術(shù).過程控制.圖形藝術(shù)用反射密度計(jì)的光學(xué)幾何圖形和計(jì)量要求