冬季来临，轮胎容易老化，与路面的摩擦系数降低，出现抓地不稳的状况。
Winter, tire easily aging, lower coefficient of friction with the road surface, the situation appears unstable grip.
用压缩应力松弛系数作为老化性能变化指标，得出了性能随老化时间和温度变化的动力学曲线。
The kinetic curves properties response aging time and temperature were obtained with the coefficient of compression stress relaxation as index of aging property change.
在已知的塑料中，四氟具有最好的耐腐蚀性，不老化，油封低磨擦系数，耐磨擦。
It has the best chemical corrosion resistance among known plastics. Without being aging, lowest friction coefficient, wear resistance.
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.
其优点是编织科学、耐磨损、耐老化、耐腐蚀、防暴晒，伸缩性低，安全系数高。
The advantage is weaving science, wear resistance, aging resistance, corrosion resistance, anti-exposure, low flexibility, high safety factor.
其优点是编织科学、耐磨损、耐老化、耐腐蚀、防暴晒，伸缩性低，安全系数高。
The advantage is weaving science, wear resistance, aging resistance, corrosion resistance, anti-exposure, low flexibility, high safety factor.
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