吸: inhale; breathe in; draw光: light; ray指数: index number; index消光系数；吸光指数: absorbancy index光指数: optical index暴光指数: exposure index曝光指数: bsi exposure index; ei; exposure value index; exsposure index屈光指数: index of refraction; refractive index index; ri闪光指数: gn(guide number); guidenumber闪光指数盘: glare index眩光指数: glare index折光指数: refraction index; refractive exponent; refractive index折光指数表: refractive index table昼光指数: daylight index比较屈光指数: of relative refraction indices航摄曝光指数: aerial exposure index鉴别折光指数: dri differential refractive index绝对屈光指数: absolute index refraction平均屈光指数: mean index of refraction; mean index refraction曝光指数标度: ev number scale曝光指数等级: guide number letter scale推奖露光指数: rei折光指数增量: refractive index increment折射率，折光指数: refractive index折射指数,屈光指数: index of refraction
