During the alternating transportation of product oil through pipeline, the flow rate of the oil changes with the moving of the mixed oil segment.

在管道顺序输送成品油过程中，随着混油段的移动，管内流量必然会发生变化。

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Apart from power, the oil and gas industry is also emerging as a lucrative end-user segment, especially with the rise in exploration activities.

除了电力，石油和天然气行业也正在成为一个利润丰厚的最终用户领域，特别是伴随着勘探行动的增多。

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The polyurethane (PU) is a polymer formed with urethane segment, as very high resistance to tear and abrasion, good resistance to ozone, oil and petrol, is widely used.

聚氨酯（PU）是一种具有氨基甲酸酯链段重复结构的聚合物，具有很好的耐撕裂和耐磨损性，良好的抗臭氧和耐油性，应用广泛。

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Its enterprise multiple of 11 is a tad less than the oil-service segment's median of 12.

FORBES: Gassing Up

Year-to-date the fund is up a hefty 12.9 percent, besting competing funds in the oil equipment and services segment.

FORBES: Riding The Energy Bull With The Right ETF

Tuesday's surging oil price rippled throughout various segment's of the economy.

FORBES: Magazine Article