变质油  deteriorated oil

润滑油变质  Lubricant change in character

油品变质  oil deterioration; deterioration of oil product

稠油油质  viscous crude oil property

轻质油油藏  light oil reservoir; light-oil reservoir

原油油质  crude property

中质油油藏  medium oil pool

重质油油藏  Heavy-oil Reservoir

重质油油田  heavy-oil field

变质变形  metamorphism and deformation; metamorphism-deformation

变质变形期次  metamorphic-deformation episode

变质变形作用  Metamoiphism and deformation

变质变形作用特征  Deterioration distortion function characteristic

变质质量  Metamorphic quality

换质变质层  metasomatile deposits

泥质变质岩  Metapelites

泥质变质岩类  pelitic metamorphic rocks

碳质变质  carbonic metamorphism

有机质变质程度  degree of organic metamorphism