On the practice level of circular economy, there is business enterprise level (tiny circulation), district level (regional circulation) and social level (wide circulation).
循环经济的实施层面有企业层面(微循环)，区域层面(小循环)和社会层面(大循环)。
By the data analysis, combined with the construction practice, the paper discussed the practicality, the economy and social benefits of bitumen seal curing technology for reference.
通过试验段数据分析和多年实践证明沥青封闭养生技术在路面翻修与挖补方面，具有实用性、经济性、社会效益性，值得借鉴和推广。
By the data analysis, combined with the construction practice, the paper discussed the practicality, the economy and social benefits of bitumen seal curing technology for reference.
通过试验段数据分析和多年实践证明沥青封闭养生技术在路面翻修与挖补方面，具有实用性、经济性、社会效益性，值得借鉴和推广。
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