“回填”的拼音？

最后回填沟槽, 固定隧道段.Finally, the channel is filled in to give the tunnel stability.在大坝基础工程帷幕灌浆、回填技术上处同行之首.Its dam foundation grout curtain and backfilling technologies are advanced.最后介绍了用强夯法加固回填地基的实例.Finally, an example of rei...

“回填”的英语可以翻译为：[建] backfill ...