瞬变流动是供热管网中普遍存在的流动状态。
Transient is the widespread and existent fluxion appearance in the heating networks.
本文讨论了管内瞬变流这一类双曲型非线性分布参数系统的状态观测问题。
This paper examines the problem of observing the state of fluid pipeline transients.
在实际运行中，湿天然气在输送管道中存在气液两相，因此管道中的流动总是处于慢瞬变流动状态。
The wet natural gas in transmission pipeline assumes two phase of gas and liquid, so its flowing always assumes a slow transient flow state.
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