As an appendix, expression for escape sign, size of Graph and letter, colour, brightness, brightness contrast, visibility and apparent distance are also listed from technical requirements.
作为附录，还列出了疏散标志的表示方法、图形文字尺寸、颜色、亮度、亮度比、可见度、视距等技术要求。
As an appendix, expression for escape sign, size of Graph and letter, colour, brightness, brightness contrast, visibility and apparent distance are also listed from technical requirements.
作为附录，还列出了疏散标志的表示方法、图形文字尺寸、颜色、亮度、亮度比、可见度、视距等技术要求。
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