煤焦油经管式炉蒸馏后，酚油，洗油和萘油馏分组成的三混馏分再经过洗涤后获得。
Distill coal tar in a tube furnace to generate 3 mix oil , and obtain crude phenol from washed 3 mix oil .
C9馏分由于成分组成相当复杂，其各成分对合成石油树脂影响的了解还十分有限。
Because of complex components, the effects of C9 cuts to petroleum resin are unclear.
C9馏分由于成分组成相当复杂，其各成分对合成石油树脂影响的了解还十分有限。
Because of complex components, the effects of C9 cuts to petroleum resin are unclear.
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