One major problem is that degraded soils become compacted and so absorb less water, which then tends to run off the surface, taking topsoil with it.
一个主要的问题是，退化的土壤变得密实，造成吸水量减少，从而导致水从地表流失并将表土带走。
The blasting residues were compacted and refused on the site to create the project's new ground: a disturbed surface rather than one extracted from the territory.
爆破产生的残渣通过压实形成地面，而没有在基地上进行新的铺装：采用干预性的表面而不是对场地进行挖掘。
This article mainly concentrated on the parameters transformation of vibrating compaction, hitting of roll compacted concrete, and surface vibration on the basis of experimental research.
通过试验研究，本文论述了碾压混凝土的振动碾压，击实和表面振动的参数变换关系。
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