目前我国道路交通标志牌使用板材大都是铝合金，由于铝合金板属于不可再生资源，随着资源逐年递减而成本逐年增加。
At present, aluminum alloy, which belongs to non-rebirth resources, is mostly used as board materials of traffic signs in China. The cost increased with the yearly reduction of this resource.
目前我国道路交通标志牌使用板材大都是铝合金，由于铝合金板属于不可再生资源，随着资源逐年递减而成本逐年增加。
At present, aluminum alloy, which belongs to non-rebirth resources, is mostly used as board materials of traffic signs in China. The cost increased with the yearly reduction of this resource.
应用推荐