第一部分 翻译

1)Flowlines, the first link in the transportation chain from producing well to consumer, are used to move produced oil from individual wells to a central point in the field for treating and storage.

2)The next link in the oil pipeline chain is gathering lines that transport oil from field processing and storage facilities to a large storage tank or tank farm where it is accumulated for pumping into the long-distance crude trunk line.

3)Where no physical barrier is used between different products, the difference in density of the two materials maintains the separation (under pressure and in turbulent flow) with only a short length interval in which mixing occurs.

第二部分 听力

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第三部分

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