tamped liner

例句：

1. 1. The engineer used a tamped liner to reinforce the foundation.
   工程师使用压实衬垫加固地基。
2. 2.The tamped liner was designed to prevent water seepage.
   压实衬垫的设计旨在防止水分渗透。
3. 3. The construction crew carefully placed the tamped liner before starting work.
   施工队在开始工作前仔细放置了压实衬垫。