class b fire 中文意思是什麼
class b fire
解釋
乙類火-
Fire test standard for class 1 : a insulated wall or walls and ceilings or roofs ; b plastic interior finish materials ; c plastic exterior building panels ; d wall and wall and ceiling coating systems ; e interior or exterior finish systems
1級防火試驗標準: a絕緣墻或墻壁和天花板或屋頂; b塑料內部終飾材料; c塑料外部建築面板; d墻和墻和天花板塗覆系統; e內部或外部終飾系統 -
B class fire door
B級防火門 -
Shipbuilding and marine structures - windows and side scuttles for fire - resistant constructions ; specifications - part 1 : " b " class divisions ; identical with iso 5797 - 1 : 1989
造船和海上結構物.耐火結構的窗和舷窗.規范.第1部分 -
Class b fire alarm b
類火災報警 -
B class fire door self - closing
B級自閉式防火門
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