So, processing mixture of vacuum residue and ethylene heavy tar is expected to be a better route for expanding ethylene heavy tar use.

在减压渣油中掺兑乙烯重焦油，有望成为扩大乙烯重焦油利用的一种途径。

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So, processing mixture of vacuum residue and ethylene heavy tar is expected to be a better route for expanding ethylene heavy tar use.

在减压渣油中掺兑乙烯重焦油，有望成为扩大乙烯重焦油利用的一种途径。

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