中间基原油

aromatic base crude oil mixed base crude oil intermediate base crude oil paraffin intermediate crude base oil crude oil emulsion heavy crude oil weathered crude oil crude oil automobile sweet crude oil topping of crude oil intermediate base crude (oil) intermediate base crude base of crude oil asphaltic base crude oil naphthene base crude oil asphalt base crude oil paraffine base crude oil aromatic base crude (oil) naphthenic (base) crude (oil)