With the coming maintenance period of the aging road in China, the old asphalt pavement's recycling has become an important issue.
我国许多高速公路路面已经进入全面维修期，旧沥青路面的再生利用是一种主要养护方法。
Into the 21st century, our country is entering a "housing aging" period, the time of a comprehensive renovation of old housing has come.
进入21世纪以来，我国正步入一个“住宅高龄化”阶段，全面地对旧住宅进行更新改造的时期已经到来。
During storage or in operation the frequency of the crystal resonator will change according to the duration period, which is define as aging in crystal field.
石英谐振器在贮存、使用过程中频率随时间变化的现象称为老化。
Project has been put into operation to enter the aging period, the reservoir water has been restricted to run sick and seriously affect the effectiveness of the play.
工程投产至今已经进入老化期，水库一直被限制蓄水带病运行，严重影响工程效益的发挥。
Results: Of these data, aging, lower educational background, short period of the working, high rate of the middle or primary professional title, inadequate training and relevant knowledge were found.
③从事全科医疗的时间较短。④绝大多数是中级职称，个别区初级职称比重偏大。⑤接受全科医学培训和有关全科医疗的知识掌握不够。结论：急需培养高学历的中青年全科医疗人才。
The results showed that the change of each parameter was obvious in the earlier aging period and such change was gentle in late aging period.
结果表明，陈酿前期各参数变化较明显，而后都朝着平缓的趋势变化；
The results showed that the change of each parameter was obvious in the earlier aging period and such change was gentle in late aging period.
结果表明，陈酿前期各参数变化较明显，而后都朝着平缓的趋势变化；
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