1)refined heavy base,精练重质焦油碱2)refined tar,精练焦油3)heavy tar,重质焦油4)refined tar bases,精制焦油碱类5)alkali scouring,碱精练6)heavy ethylene tar,重质乙烯焦油
用法例句
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.
用蒸汽在机械化澄清槽底部间接加热，使沉积于底部的重质焦油软化，减少刮板阻力。
Traditional alkali scouring can be substituted by enzyme-based treatment.
