Warning: file_put_contents(): Only 0 of 5111 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/73904.com/index.php on line 55 drag scraper例句_drag scraper英汉例句_drag scraper双解例句_骑士汉英词典
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。