Oil temperature drop and oil contraction can cause gas space growing in oil pipe and line packing during hot oil pipeline shutdown and restarting.
热油管道停输后，管内油品降温收缩，管内会产生油蒸气空间，从而使管道再启动时出现启动充装过程。
The article introduces the concept, composition, main function, and engineering application of gas hot line information management system.
文章介绍了燃气热线信息管理系统的概念、组成、主要功能与工程应用。
The line is composed of hot gas generator, melting furnace and annealing furnace in series.
研制成功一种新型烧煤的炉组，由热煤气炉、熔化炉和退火炉串联组成。
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