constructional material〔名词〕建筑材料详细»
constructional material〔名词〕建筑材料详细»
constructional material〔名词〕建筑材料详细»
结构材料construction material;material of constuction详细»
结构材料constructional material详细»
结构材料construction material;constructional materials;material of construction;structural material详细»