根据矿井排水系统一般可以简化为串联复杂管路系统的特点，采用特征线法模拟其断电停泵的瞬变过程。
Since a mine pumping system can generally be simplified into a complicated pipe-line system in series, the transient process is simulated by a method of characteristic line.
为了给我国的高速铁路设计提供理论依据，采用特征线法对高速列车进入隧道引起的一维非定常流动进行了数值研究。
One dimensional unsteady flow induced by a high speed train entering a tunnel was numerically studied using the method of characteristics.
本文还采用非恒定计算的特征线法，对该水电站引水系统模型非恒定流进行了计算，其计算结果与模型试验结果吻合。
This paper also calculates the unsteady flow of the hydropower station's model by using of the characteristics method, the calculated result is extremely close to the experimental result.
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