backfilling
短语词组
- backfilling plate 垫板
- backfilling bucket 斗式回填机
- backfilling finish 背面上浆整理
- Subsequent backfilling 嗣后充填
- backfilling E 回填
- backfilling assemblage 管沟回填队
- stage backfilling 阶段嗣后充填
- gravel backfilling 砾石回填
- gangue backfilling 矸石充填
- backfill material 回填物料；填充料 返回 backfilling