分析加工高酸值原油常减压蒸馏装置管道腐蚀的特点，探讨其主要管道的选材原则。
Analyze features of corrosion of pipeline for high acidic crude oil of atmospheric and vacuum distillation unit, probe major principle for selection of piping material.
他拖的其中一辆车飞了出去撞到了一所房子上，撞碎了空调和天然气主要管道。据消防队长Kobrin说。
One of the cars he was towing flew off and struck a house, crushing the air conditioner and gas main system, according to Fire Chief Barry Kobrin.
在班加西的全国过渡委员会称，他们现在已经控制了的黎波里南部主要管道网络，也被称为大人工河的关键部分。
The National Transitional Council in Benghazi says that it has now taken control of key parts of a major pipeline network south of Tripoli, known as the Great Man-Made River.
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