Oil molecules do not break down, just the additives.

机油分子不会分解，仅仅是添加剂耗损。

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A new method is introduced in this paper on bright quenching oil without additives.

本文提出了一种研制无添加剂光亮淬火油的新方法。

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A new method is introduced in this paper on bright quenching oil without additives.

本文提出了一种研制无添加剂光亮淬火油的新方法。

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