precompaction

例句：

1. 1. The soil was compacted before planting the trees.
   在种植树木之前，土壤被压实了。
2. 2.Precompaction is a technique used to improve soil structure.
   预压实是一种用于改善土壤结构的技术。
3. 3.During the construction process, precompaction is often applied to prepare the ground for heavy machinery.
   在施工过程中，预压实通常用于为重型机械准备地面。