In batch pipelining, the location of batching interface is always variable and the physical property values of involved oil such as surge wave speed change along pipeline.

在顺序输油管道中，混油界面的位置不断发生变化，水击波速等油品物性参数值在管道沿线的分布也随之变化。

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But he has recently experienced a surge in popularity, riding a wave of disillusionment, particularly among the urban middle class.

BBC: Pakistan political crisis: Key players

At one point in the video, a tractor and trailer pass in the opposite direction, causing a wave of water to surge over the Land Rover's bonnet.

BBC: Welney Land Rover flood driver was 'irresponsible'

They're using data collected by the weather service during the storm, to try to understand the surge, try to understand the wave heights, and they're going to create a computer model, as opposed to the scale model of a city, for the storm as it came up from the south and the Gulf of Mexico, and see if they can recreate the exact conditions.

NPR: Scale Model Aids Probe of Katrina Damage