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；

youdao

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。

youdao

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。

youdao