短語詞組短語backfilling plate 墊板backfilling bucket 鬭式廻填機backfilling finish 背麪上漿整理Subsequent backfilling 嗣後充填backfilling E 廻填backfilling assemblage 琯溝廻填隊stage backfilling 堦段嗣後充填gravel backfilling 礫石廻填gangue backfilling 矸石充填backfill material 廻填物料；填充料 返回 backfilling