单词	plaback synch
释义	plaback synch 重放同步
随便看	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 backfill of the site backfill on mining backfill operations backfill pillar backfill pressure backfill pulp quality Backfill quality backfill rammer backfill reinforcement with argil concrete backfills