研究有机玻璃材料在湿热加速老化条件下的力学性能，得到有机玻璃在湿热条件下的老化规律。
The mechanical properties of perspex under an accelerated aging condition of the hygrothermal were studied, and the laws of hygrothermal aging for perspex were obtained.
只有当所有实验室都采用同样设计的紫外荧光设备、灯和老化条件时，实验室间的比较才是有效的。
Interlaboratory comparisons are valid only when all laboratories use the same design of fluorescent UV device, lamp, and exposure conditions.
本标准使用的老化条件并不试图去模拟当地气候现象如大气污染、生物侵蚀，以及盐水老化导致的性能退化。
The exposure used in this practice is not intended to simulate the deterioration caused by localized weather phenomena such as atmospheric pollution, biological attack, and saltwater exposure.
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