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
(superscript 15)N isotope dilution
[Ubbelohde] dilution viscometer
~(15)N isotopic pool dilution
15N isotope dilution method
15N isotope dilution technique
15N isotopic pool dilution