the weak foundation

• 软弱地基

the weak foundation的用法和样例：

例句

1. When dynamic compaction method is used to improve the soft soil foundation, environmental vibration will appear due to radiating of compaction energy.
   摘要利用强夯法加固软弱地基时，其夯击能将以波的形式向外扩散，进而导致周围环境的振动。