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。
2
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。
3
The kinetic curves properties response aging time and temperature were obtained with the coefficient of compression stress relaxation as index of aging property change.