stair 防烟楼梯 smoke prevention 防烟法 smoke production rate 烟气产生率 smoke proof staircase 防烟楼梯间 smoke proof 防烟的 smoke removal efficiency 烟雾清除效率 smoke removal 排烟 smoke scare 烟气引起的恐慌 smoke screen 挡烟垂壁 smoke sensing chamber 烟雾受感室 smoke sentivity 感烟灵敏度 smoke...