拡かく散さん反はん射しゃ係けい数すうMeaningsNoun1. diffuse reflection coefficientKanji used拡expand horizontally散scatter around反be against射shoot係be involved with数numberComposed of拡かく散さんspreading; disseminating; scattering; diffusion (of light, gas)Noun反はん射しゃreflection; reverberation; reflex; reflexesNoun係けい数すうcoefficient; factor; proportional constant; modulusNoun