It showed each component in N2 atmosphere had no obvious aging phenomena.
研究表明，在氮气氛围下，各组分均无明显老化现象。
As a country of large population, the problem of aging phenomena is much more severe than other countries.
作为人口大国的中国，其老龄化现象出现的速度和力度较之其他国家将更为迅猛。
Aiming at the test results of different test methods, aging phenomena and difference of the coating under different stress were analyzed.
针对不同试验方法的试验结果进行对比分析，探讨涂层材料在不同应力条件下的老化现象及其差异性。
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