So it is necessary to study the optimization operation of hot oil pipeline after adding DRA, which can make optimal scheme and provide basis for scientific decision.
因此，有必要对热油管道中添加减阻剂的优化运行进行研究，制定最优运行方案，为科学决策提供依据。
Optimization problem in operation has been put forward for Daqing-Tieling oil loop pipeline which undertook large-scaled technical transformation.
大庆至铁岭双线输油管道已进行了大规模的技术改造，对改造后的运行提出了最优化问题。
In order to ensure oil and gas pipeline safety operation, it is necessary for the building pipeline and existing aging one to make inspection & maintenance costs and reliability optimization.
为确保油气管道的安全运行，有必要对新建管道和在役老龄管道系统进行长期检测和维修优化，使得在检测及维修费用与可靠性之间达到最佳。
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