Modification of rinsing techniques by installing cascading or counter - current rinse systems increases the contaminant concentration.
安装了阶梯式装置或对流漂洗装置,可改进漂洗技术,把污染物的浓度提高.
The gas contains blow - by, sludge, acids, oil, and other contaminant.
这些气体包括窜缸气体, 沉积物, 酸, 机油和其它杂质的气体.
What contaminant should you be most about and why?
你应该对什么污染物最关心的,为什么?
The report will also address another emerging contaminant, trichloroethylene.
来自SA
"This is a very widespread contaminant," Wiles said.
来自SA