oil pit滤油防火装置oiln.油；油画颜料；奉承话v.涂油；溶化；加油oil exploration project石油勘探项目oil/gas distribution油气分布oil bleaching apparatus油的漂白仪器oil-bound water paint油粉oil and ground relation油地关系oil-cooled transformer油冷变压器oilfield produced waters油田采出水oil conversion processes石油的转化过程oil-type servo-motor油压式伺服电动机oil and gas pump station输油气泵站