From Red to Gray: Ageing populations in East Europe and Central Asia: The region needs to get ready to grapple with a unique situation of rapidly aging yet relatively poor populations.
The effect of environment factors on the ageing of polymer materials, the ways of artificial aging test and the ways of protection against ageing are introduced.
本文分析了各种环境因素对高分子材料的影响，介绍了常用的几种加速老化试验的方法及老化材料防护措施。
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That ageing caused collaterals disease and phenomenon of auto-aging was result from progressive failure of entrails function.