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【簡答題】翻譯：A portion of the sample is used to determine the gravity of the oil expressed in AIP unit the lighter the oil, the higher the API gravity .In most cases the price paid for the coude is determined in prat by the API gravity, hence ,the importance of careful gravity determination in each instance.
答案：
對原樣樣品的比重進行測試并用AP 制單位表示出來。原油越輕，重度越高。在多數(shù)情況下原油的市場價受重度的影響。所以測定原油...
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答案：
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【簡答題】翻譯：Meanahile ,steel pipes that would carry the oil were being developed . These were the first oil pipelines which take the advantage of the fact the oil is a liqnid. The ideas of a pipeline were not new , water has been transported through pipes for handreds of year ,The oil pipeline were not accepted without a struggle, hower.
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同時，人類發(fā)展了用鋼管輸送石油的工藝技術(shù)。利用石油是液體這一特點，建成了第一批石油輸送管線。事實上用管線輸送液體的構(gòu)想早...
