oildom石油产区oiln.油；油画颜料；奉承话v.涂油；溶化；加油oil pipe-line油管oil pan packing油盘密封垫oil oscillation油膜振荡oil depot jetty油站码头Oil of Cardamon小豆蔻油oil casing pipe石油套管oil base polish油基光亮剂oil cap packing油盖垫oil sight gauge外视油量计oil engineering油脂工程