Now imagine that this pipe is filled with hotgas moving 50, 000 kilometers per hour.
再想象一下，这样的管道充满了每小时移动50000千米的炙热气体。
2
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。
3
The reason of excessive oxygen content in gas main pipe of two-stage water gas gasifier during hot reserve is analyzed, and improvement measures are put forward.