通过对排水管道回填土夯实存在问题的分析，经过近几年的实践找到了相应的措施和对策，并收到了良好的效果。
By an analysis of the backfill tamping problems in drainage pipelines, and after many years of practice, the author has found corresponding measures with good results.
先进的技术和经济的作业方式使液压高速夯实机具有高效性，可广泛运用于多种松软土壤和回填土壤。
Rapid Impact Compactor provides a technically sound and economic method of improving the capacity of a wide variety of loose soils and fills.
先进的技术和经济的作业方式使液压高速夯实机具有高效性，可广泛运用于多种松软土壤和回填土壤。
Rapid Impact Compactor provides a technically sound and economic method of improving the capacity of a wide variety of loose soils and fills.
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