单词	repeat impact
释义	repeat impact 多次冲击
随便看	backfilling pressure casting backfillings backfilling sand backfilling sealing back filling shrinkage back filling soil backfilling strengthening backfilling stroke back filling system back-filling system back-filling tamper Backfilling technology back-filling temper backfilling thickness backfilling thrower backfilling with coal refuse backfill material backfill materials Backfill mechanics backfill mining backfill of earth dam backfill of land collapse backfill of pit back fill of platform backfill of rain spell