BS 2782-5 Method 552A-1999是關于《塑料試驗方法.風化后光學和顏色特性.在透過玻璃的日光、自然風化和試驗室光源下暴露后顏色和特性變化的測定》的方法。
Methods of testing plastics - Optical and colour properties, weathering - Determination of changes in colour and variations in properties after exposure to daylight under glas
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