If you are blending oils, you will need a dropper pipette for each raw oil you use.

如果需要混合精油，还需要一根滴管来吸取你要用的精油。

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Make sure you add them to a clean container, and use a separate dropper pipette for each raw oil, otherwise you will mix them in unexpected ways.

一定要把它们加到一个干净的容器里，然后每种精油原料都各用一支滴管来吸取，否则的话，你就用其它非常规的方法来混合它们。

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Oil sludge is produced in the process of raw oil dehydrating in oil field corporations and oily sewage disposal in the petrochemical industry factories.

含油污泥主要产生于油田企业对原油脱水以及油田和炼油厂等石化行业的污水处理部门对含油污水的处理过程中。

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For a car, of course you need raw crude oil, and then refineries to make gasoline and transportation networks to deliver it.

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