求翻译：挡风板上有一定数量的开孔，挡风板的材质为金属板。钢结构支撑为为桁架结构。桁架结构可分为空间桁架和平面桁架，其连接方式有焊接和螺栓连接。钢结构支撑的根据所见项目地的气候条件（主要是50年一遇风压、最大风速）进行结构的设计。在钢结构支撑中，桁架形式是首选，因为螺栓球网结构有可能因为风的振动，使连接的螺栓球松动。是什么意思？

Air baffle has a certain number of openings, wind deflector is made of sheet metal. Support to the steel truss structure. Truss structure can be divided into space truss and plane truss, the connections are welded and bolted connections. Steel support under the project to see the climatic conditions

The windshields, a certain number of windshields hole opening, the material of a metal plate. Steel structure to support the wooden structure. wooden structure can be divided into Space truss truss peace-oriented manner, its connection with welding and bolting. Steel structure supporting the project

On the weather board has certain quantity to open the hole, the weather board material quality is the metal plate.Steel structure support for girder construction.The girder construction may divide into the space truss and the plane truss, its connection way has the welding and the bold fastening.(As

On the shield there is a certain number of openings, shield made of metal plates. Steel support for truss structure. Plane truss fall into space trusses and truss structure, their connections are welded and bolted. Steel support according to the climatic conditions under item (mainly 50 wind pressur

On the shield there is a certain number of openings, shield made of metal plates. Steel support for truss structure. Plane truss trusses and truss structure can be divided into space, on which there are welded and bolted connections. Steel support according to the climatic conditions under item (mai