With the comparison of quality targets fore and aft treatment, the effect shows that centrifugal separation technology is appropriate for heavy sump oil.
2
为了使换下来的机油能够在第二年重复再利用，中原油田分公司采油五厂研制了污油机油净化处理装置。
The purification device of dirty engine oil for reusing the waste engine oil again in next year was developed.
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