The process of two-stage hydrogen refining for the preparation of grinding oil was studied.

以常二线馏分油为原料油，研究了加氢精制生产研磨油的工艺。

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The process of two-stage hydrogen refining for the preparation of grinding oil was studied.

以常二线馏分油为原料油，研究了加氢精制生产研磨油的工艺。

youdao