主结构构件的耐火限度
fire-resisting limit of main structural member
小型预制构件
Small prefabricated piece
small precast element
预制构件
prefabricated components
PRECASTING
prefabricated part
precast element
prefabricated component
building block
prefabricated member
precast segment
prefabricated unit
precast concrete element
precast unit
precast reinforced concrete member
prefab
被美术馆环绕的工厂
An Manufactory Surrounded by Art Galleries
变速箱液压操纵机构的工作
transmission hydraulic control operation