The direction of luminiferous evacuation indicator is fixed in complex fire accident scene，that is difficult to play safe and effective role in the evacuation instructions.
发光型疏
牌
引方向固定不变，在复杂火灾事故现场难于起到
有效疏作用。
The direction of luminiferous evacuation indicator is fixed in complex fire accident scene，that is difficult to play safe and effective role in the evacuation instructions.
发光型疏牌引方向固定不变，在复杂火灾事故现场难于起到有效疏作用。
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