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.
采用光学显微分析法在不同直径硬线钢的不同部位，分析了非金属夹杂物的数量、大小和分布特征。
The amount, size and distribution of non-metallic inclusion in different positions of hard wire steel with different diameters were investigated by optical microanalysis.
液体在长输管道内不稳定流动问题可以采用各种数直解法并借助计算机来进行处理，如特征线法、隐式差分法等。
Numerical method for computer solution are used for fluid flow in long distance pipeline, such as characteristics method, implicit difference method and so on.
液体在长输管道内不稳定流动问题可以采用各种数直解法并借助计算机来进行处理，如特征线法、隐式差分法等。
Numerical method for computer solution are used for fluid flow in long distance pipeline, such as characteristics method, implicit difference method and so on.
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