“回填”用英语怎么说?

“回填”的英语可以翻译为:
[建] backfill
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    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...