The Powell structural research lab at the university of California at San Diego tests new bridge materials such as carbon and fiberglass polymers.
位于圣地亚哥的加州大学鲍威尔建筑实验室试制出了新的桥梁建筑材料，如碳和玻璃纤维聚合体。
An embellishment in strip form, made of wood or other structural material, that is used to decorate or finish a surface, such as the wall of a room or building or the surface of a door or piece of furniture.
装饰线条线条形式的装饰，由木头或其它构造材料制成，用作装饰或完成一个表面，如房间或建筑的墙，一扇门或一件家具的表面
There is a structural alteration to the building.
这座建筑物在这有一处结构上的改变。
