dirty oil meaning in English

含杂质油
黑油
污油
脏油

D . save oil : the machine can soak out the dirty oil liquid from equipments , the filtered oil can be put into the oil box
节油：该机可将设备中脏油吸出，过滤后就地加入油箱重复使用，节省新油。
In hfbwt type , electro - hydraulic converter is replaced by high reliable step - motor to avoid the fault caused by dirty oil , so it has high response speed and good adjustable characteristic
Hfbwt型用进口高性能步进电机取代电液转换器，彻底解决油污发卡问题。起响应速度快，调节品质好
It was coming - - as the prime minister had known at the first cough - - from the froglike little man wearing a long silver wig who was depicted in a small , dirty oil painting in the far corner of the room
那声音? ?正如首相在听到第一声咳嗽时就预料到的那样? ?是从屋子角落里一个又小又脏的油画传来的，那里面画着一个头戴银白色假发，长得像青蛙一样的矮小男人。