上层建筑压缩空气管系(供水管、消防管、烟雾探测管)密性试验。
Superstructure compressed air (water supply, fire fighting, smoke detection) piping to be done air-tightness test.
应用现代计算流体动力学数值方法，首次建立了长大列车空气管系的二维充气特性模型。
By use of modern computational fluid dynamics method (CFD), 2-dimension air-charging characteristics model of the heavy haul train air brake pipe system is built.
应用现代计算流体动力学数值方法，首次建立了长大列车空气管系的二维充气特性模型。
By use of modern computational fluid dynamics method (CFD), 2-dimension air-charging characteristics model of the heavy haul train air brake pipe system is built.
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