To examine their depressive effect, these PPDs were used in hydrogenation base oil and paraffin base oil.

将所合成的降凝剂应用于加氢基础油和石蜡基基础油中，考察其降凝效果。

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To examine their depressive effect, these PPDs were used in hydrogenation base oil and paraffin base oil.

将所合成的降凝剂应用于加氢基础油和石蜡基基础油中，考察其降凝效果。

youdao