Poor quality oil reserves(PQOR)is still an important resource.

低品位石油储量也是我国重要的石油资源。

youdao

Vigorously develop processing industry for quality oil, grain, fruit and vegetable products.

大力发展优质粮油、果蔬加工。

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The high quality oil resistance, abrasion resistance, water and can call all around, save cost wearing parts.

高品质耐油、耐磨水刮，并可四面调用，节省易损件成本。

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And they are easy to repair. The small presses produce good quality oil.

VOA: special.2009.09.29

Allen Hershkowitz with the Natural Resources Defense Council, a private environmental group, says air quality around landfill sites must be carefully checked when oil-contaminated waste is added to normal household trash.

VOA: standard.2010.08.05

As host of this year's World Jatropha Summit, the government in Accra is seeking greater investment in the hardy plant whose seeds can be crushed into an oil that is processed into high-quality biodiesel.

VOA: standard.2009.08.23

That started changing with enormous geopolitical consequences after easy, high quality oil was found in the Arabian Peninsula and other parts of the Middle East.

CNN: America, the Saudi Arabia of tomorrow

Dana Petroleum Egypt has reported several significant exploration successes at North Zeit Bay during 2011, including encountering good quality oil-bearing sands and establishing two gas condensate field discoveries.

BBC: Dana Petroleum Egypt joint venture approved

It just shows you how valuable quality oil reserves are.

FORBES: China Gets Chummy With Chavez, You Should Buy Oil