cinnamon oil cassia oil
Essential oil Volatile oil
Extract Oil of Lubricating Oil
oil bearing sewage in oil field8
Oil Extractor in Oil Field
oil shale and oil shale residue
ultraheavy oil as fuel oil
ACC Air Condition Clutch
adjustable overload friction clutch
air clutch
空气离合器
气动离合器
轮胎离合器
气力离合器
压缩空气
气胀式离合器
automatic lookup clutch
automotive clutch plate
backing-off cone clutch