Safety Base: Film base that is fire-resistant or slow burning as defined by ANSI PH1.25 and PH22.31, and by various fire codes. Acetate-based film and polyester-based film meet safety-film standards.是什么意思_Safety Base: Film base that is fire-resistant or slow burning as defined by ANSI PH1.25 and PH22.31, and by various fire codes. Acetate-based film and polyester-based film meet safety-film standards.在线翻译_英语_读音_用法_例句