oil dag黑铅油oiln.油；油画颜料；奉承话v.涂油；溶化；加油oil tank bottom plate油罐罐底oil field producedter采油废水oil distributing pipe配油管oil and gas separator油气分离器oil-pressure gau ge[化] 油压表oil refining cauldron炼油锅oil pollution residue石油污染残留oil tubular capacitor油浸管状电容器oil-metering system油计量系统oil-state substance油状物