以下为句子列表：
英文: 2 Petroleum crude oil: Refers to naturally occurring crude oil that is mixtures of hydrocarbon compounds that contain mainly paraffin hydrocarbon, cycloparafin hydrocarbon, and aromatic hydrocarbon.
中文: 二石油原油：指一种源于自然界之原油，为碳氢化合物之混合物，其主要成分为石蜡烃、环烷烃、芳香烃等。
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英文: A process by which the hydrocarbon molecules of petroleum are broken into simpler molecules, as of gasoline or kerosene, by the addition of hydrogen under high pressure and in the presence of a catalyst.
中文: 氢化裂解将石油的含氢分子分裂成更简单的分子（象汽油和煤油的分子）的过程，此分裂过程是在加催化剂及高压氢气的条件上进行的
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英文: Abstract: New fruits are achieved constantly in the hydrocarbon exploration and development of the Tarim Basin. Among these, the computer digital graphics is a powerful tool serving the object.
中文: 文摘:塔里木盆地油气勘探、开发研究工作不断取得新的成果。计算机数字制图技术的应用，是服务于塔里木盆地油气勘探、开发的一个有力工具。
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英文: Abstract: This paper introduces the operation of light hydrocarbon xecoveryunit under low capacity eonditions, the approaches to improve propane recovery while the products quality are ensured.
中文: 文摘:介绍渤西油气处理厂轻烃回收装置低负荷运行状态下，提高丙烷收率的措施及方法。
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英文: According to oil-gas accumulation mechanism under abnormal pressure, the hydrocarbon accumulation phases are classified, and the elects of the abnormal overpressure on reservoir type awl distribution are analyzed.
中文: 依据异常压力成效机制对柴西南油气成藏阶段进行了划分，并分析了异常压力对油气藏类型和油气藏分布的控制作用。
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