GB/T 3681.2-2021塑料太阳辐射暴露试验方法第2部分:直接自然气候老化和暴露在窗玻璃后气候老化标准
英文:Plastics—Methods of exposure to solar radiation—Part 2: Direct weathering and exposure behind window glass GB/T 3681....
英文:Plastics—Methods of exposure to solar radiation—Part 2: Direct weathering and exposure behind window glass GB/T 3681....