photochromics التعريفات والمعاني == English == === Noun === photochromics (uncountable) The study of photochromism. شارك هذه المقالة: Facebook Twitter WhatsApp LinkedIn كلمات ذات صلة photochromism photochromoscope photochromic photoceramics photochromically photochromisms photochromoscopes photochroms photochromies