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.

youdao

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.

youdao