untreated oil

基本解释

The scales will absorb the excess oil, but if the problem is untreated it will become worse.
鳞片会吸收多余的油分，但如果对问题置之不理，情况会恶化。
Deep-layer QPQ technology can make the anti-corrosion of the oil pipes over 60 times higher than untreated, 2 times higher than the nitrided oil pipes.
深层QPQ 技术可使石油管材料的抗蚀性达到处理前的60倍以上，比渗氮管提高2倍以上。
Based on experiment, the paper analyses the impact of crude water content upon the heat treatment of crude oil and the changes of rheological properties as it is mixed with untreated oil.
通过试验，本文介绍了含水量对原油热处理的影响及热处理后原油掺入生油的流变性变化。

"We know that surface use of dispersants decreases the environmental risk to shorelines and organisms at the surface and we know that dispersants break down over weeks rather than remaining for several years as untreated oil might."