BS 7346-1:1990 Components for smoke and heat control systems-Part 1: Specification for natural smoke and heat exhaust ventilators.
BS 7346-1:1990 烟和热控制系统部件,自然烟和热排放通风机规范。
中国防火网全国免费咨询电话:400-666-7290
网址:www.firete.com
...
BS 7346-1:1990 Components for smoke and heat control systems-Part 1: Specification for natural smoke and heat exhaust ventilators.
BS 7346-1:1990 烟和热控制系统部件,自然烟和热排放通风机规范。
中国防火网全国免费咨询电话:400-666-7290
网址:www.firete.com
...