VACUUM GAS OIL
粗真空制气油
减压瓦斯油
VGO馏分油
减压蜡油
粗柴油
减压粗柴油
减压馏分油
蜡油
vacuum gas oil hydrotreatment
oil-gas gas exploration
large and medium gas field
Large and Medium Gas Fields
large-medium gas fields
logging of gas medium drilling
the water medium and oil medium