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crankcase oil classification 曲轴箱用油分类
classification of crude oil 原油分类 ; 标签
service classification cd oil 维修分类
api classification performance oil 美国石油协会机油性能分类
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The density of crude oil in place can be calculated by this equation. The equation provides a reliable basis for heavy oil classification and reasonable development.
用该方程式可计算在地层温度下的脱气原油密度值，为稠油分类及合理开发提供了可靠的依据。
Use this two equations can not only reduce 60% crude oil analysis costs but also provide accurate density data for classification of crude oil.
应用这两个方程可降低60 %的原油分析成本，还为原油分类提供了准确可靠的密度数据。
A classification table of oil shale ash composition is given out.
提出了油页岩灰分成分的分类表。
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