concussion compaction的用法和样例：
例句
- The principle and effect of impact compaction, and its application in rockfill subgrade is introduced in this paper.
并对冲击压实的作用原理，压实功效以及冲击压实在填石路基中的应用作了介绍。 - It is concluded that the impact compaction technology is effective and practical for treatment of collapsible loess subgrade.
因此，冲击压实技术在处治湿陷性黄土地基中是有效的和实用的，而且生产效率高，有很好的发展和应用前景。
