常見例句雙語例句Apply steam to heat the flushing-liquor decanter indirectly to soften the heavy tar depositing on the bottom of tank to decrease the drag of chain scraper.用蒸汽在機械化澄清槽底部間接加熱，使沉積于底部的重質焦油軟化，減少刮板阻力。 返回 drag scraper