Winter, tire easily aging, lower coefficient of friction with the road surface, the situation appears unstable grip.
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。
A granite platform (Granite Flat Panel) was a long-term natural aging, organizational structure, uniform, linear expansion coefficient is extremely small, internal stress disappear, not deformed.
花岗石平台（花岗石平板）经长期天然时效，组织结构均匀，线胀系数极小，内应力完全消失，不变形。
The kinetic curves properties response aging time and temperature were obtained with the coefficient of compression stress relaxation as index of aging property change.
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。
After aging treatments, the strength coefficient reached 72.5%.
经过时效处理接头强度系数提高到72.5%。
It has the best chemical corrosion resistance among known plastics. Without being aging, lowest friction coefficient, wear resistance.
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.
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。
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