最后求出了湿热加速老化与大气自然老化之间的时间变换系数。
Finally the time conversing coefficients between accelerated ageing with temperature and humidity and natural ageing in atmosphere are derived.
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.
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