phosphorescent coating
/fˌɒsfəɹˈɛsənt ˈkəʊtɪŋ/
n
English · phosphorescent coating中文 · 磷光涂层Español · revestimiento de fósforoFrançais · couche fluorescente
意味：The tube’s internal coating; it is composed of phosphate particles that convert ultraviolet rays into visible light.